DKIMproxy

DKIMproxy is an SMTP-proxy that signs and/or verifies emails, using the Mail::DKIM module. It is designed for Postfix, but should work with any mail server. It comprises two separate proxies, an "outbound" proxy for signing outgoing email, and an "inbound" proxy for verifying signatures of incoming email. With Postfix, the proxies can operate as either Before-Queue or After-Queue content filters.
  • DKIMproxy can now be configured using configuration files, instead of only through command-line argument. New installations will want to take advantage of this. Editing a configuration file is much nicer than having to edit the startup script.
  • DKIMproxy can now add multiple signatures in one pass. This lets you, for example, generate a DomainKey-Signature *and* a DKIM-Signature on your outgoing messages.
  • DKIMproxy now lets you specify different options depending on the sender of the message being signed. This is helpful for sites hosting many domains, who may want to use a different private key and/or selector for each domain being hosted.
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anyRemote

The overall goal of this project is to provide remote control service on Linux through Bluetooth, InfraRed, Wi-Fi or just TCP/IP connection. anyRemote supports wide range of modern cell phones like Nokia, SonyEricsson, Motorola and others. It was developed as thin communication layer between Bluetooth (or IR, Wi-Fi) capabled phone and Linux, and in principle could be configured to manage almost any software. anyRemote is console application, but in addition there are GUI front ends for Gnome and KDE.
anyRemote can be used by:
  • bluetooth connection with java client if cell phone is JSR82 compatible
  • Wi-Fi connection with java client if phone supports Wi-Fi
  • IR connection with java client if java realization in phone supports access to IR port
  • ordinary TCP/IP connection with java client, if PC is connectable from internet
  • bluetooth, infrared or cable connection using AT "modem" commands
  • web interface
  • it supports some of IR remotes supplied with TV tuner cards (like LIRC)
  • it has limited support for Bemused clients
  • experimental support for iPhone/iPod Touch with Command Fusion's iViewer installed
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NOCC

NOCC is a webmail client written in PHP. It provides webmail access to IMAP and POP3 accounts.
Features
  • Connection to IMAP and POP3 server with c-client library
  • Sending mail with Sendmail or SMTP server
  • Support MIME attachment messages (it passes the "MIME Torture Test" that UW makes available)
  • Multi-language support (36 languages so far)
  • Themable (you can change all the colors and fonts easily)
  • Renders pages in XHTML 1.0 for maximum compatibility with any browser, works with text browsers
  • No frames, cookies not required (can use URL-based sessions)
  • No need of a database
  • Works on Win32, various Unix systems (including suEXEC with Apache)
  • Distributed under GPL license
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Claroline

Claroline is an Open Source eLearning and eWorking platform allowing teachers to build effective online courses and to manage learning and collaborative activities on the web. Translated into 35 languages, Claroline has a large worldwide users’ and developers’ community.
Claroline released under Open Source license, the Claroline platform allows hundreds of organizations from 93 countries to create and administer courses and collaboration spaces online. Each course space provides a list of tools enabling the teacher to :
  • Write a course description
  • Publish documents in any format (text, PDF, HTML, video...)
  • Administer public and private forums
  • Develop learning paths
  • Create groups of students
  • Prepare online exercises
  • Manage an agenda with tasks and deadlines
  • Publish announcements (also by e-mail)
  • Propose assignments to be handed in online
  • See the statistics of the users activity
  • Use the wiki to write collaborative documents
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Milter manager

Milter manager is a free software to protect you from spam mails and virus mails effectively with milter. Milter manager can be used with MTAs that supports milter like Sendmail and Postfix. It works on Ubuntu, CentOS, FreeBSD and so on.
Milter manager is a milter that manages multiple milters. We can register multiple milteres to milter managers and a milter session for milter manager is transfered to registered milters. Registered milter is called "child milter".
Milter manager works as a proxy. milter manager looks like a milter from MTA side. milter manager looks like a MTA from child milter. Milter manager embeds Ruby interpreter. Ruby is a real programming language that provides easy to read syntax and flexibility.
Milter manager can configure milters more flexible than existing MTA because milter manager's configuration file is processed as a Ruby script. For example, milter manager can detect milters installed in your system and register it. It means that you can change each milter's configuration without updating milter manager's configuration.
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IndiMail

IndiMail is a mailing solution built using following packages qmail, serialmail, qmailanalog, dotforward, fastforward, mess822, daemontools, ucspi-tcp, Courier IMAP/POP3, Bogofilter - A Bayesian Spam Filter, Fetchmail, other useful utilities (pack, unpack, altermime, ripmime, flash). IndiMail also provides Management of Virtual domains. Lot of the integration has been done by modifying some of the core components. IndiMail works on 32 / 64 bit Unix platforms.
The power of IndiMail lies in the ability to distribute the users across multiple hosts in a non-proprietary, simple way. You can have multiple hosts hosting a domain placed anywhere and tied up by IndiMail. This allows you to migrate seamlessly from a proprietary solution like Lotus Notes or MS Exchange to IndiMail. Just install the proxy IMAP/POP3 and point the MX record to IndiMail.
Though IndiMail uses the power of qmail, it has multiple queues (called a queue collection). The collection allows IndiMail to process a very high incoming rate of mails. The system ids, configuration files used by IndiMail are all configurable through a set of environment variables. This gives the ability of a single installation of IndiMail have a different behavior for each queue, sender, recipient, source host, destination host.
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Open DC Hub

Open DC hub is a Unix/Linux version of the hub software for the Direct Connect network. Direct Connect is a file sharing network made up by hubs, to which clients can connect. Once connected to a hub, the user can search for files on the hub or the network, or browse files of other users connected to the hub.
Open DC Hub supports all the main features of the Direct Connect protocol. Some examples are:
  • Searching for files
  • Connecting to users, both in active and passive mode
  • Messaging in open chat
  • Private messaging
  • Registering users
  • Kicking users (for OP:s)
  • Banning users (for Admins)
  • Uploading hub address and description to public hub list
  • Hublinking, which makes it possible to search on other hubs connected to the network
  • Administration of the hub from chat
  • Scripting (In Perl)
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Courier Mail Server

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework. Individual components can be enabled or disabled at will. The Courier mail server now implements basic web-based calendaring and scheduling services integrated in the webmail module. Advanced groupware calendaring services will follow soon.
The Courier mail server's source code should compile on most POSIX-based operating systems based on Linux, and BSD-derived kernels. The Courier mail server should also compile on Solaris and AIX, with some help from Sun's or IBM's freeware add-on tools for their respective operating systems.
The Courier mail server evolved out of several related projects, that merged together (more on that later). The Courier mail server implements SMTP extensions for mailing list management and spam filtering. The Courier mail server can function as an intermediate mail relay, relaying mail between an internal LAN and the Internet, or perform final delivery to mailboxes. The Courier mail server uses maildirs as its native mail storage format, but it can also deliver mail to legacy mailbox files as well. The Courier mail server's configuration is set by plain text files and Perl scripts. Most of The Courier mail server's configuration can now be adjusted from a web browser, using The Courier mail server's web-based administration module.
The Courier mail server can provide mail services for regular operating system accounts. The Courier mail server can also provide mail services for virtual mail accounts, managed by an LDAP, MySQL, or PostgreSQL-based authentication database.
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Serendipity - a PHP Weblog/Blog software

Serendipity is a PHP-powered weblog application which gives the user an easy way to maintain an online diary, weblog or even a complete homepage. While the default package is designed for the casual blogger, Serendipity offers a flexible, expandable and easy-to-use framework with the power for professional applications.

Serendipity's basic features include something for everybody, from the personal blogger to the professional corporate web designer:

  • WYSIWYG and HTML editing
  • Built-in, powerful media database
  • Multiple authors, configurable permission/usergroup system
  • Threaded comments, nested categories, post to multiple categories
  • Multiple languages (internationalization)
  • Online plugin and template repository for easy plug-and-play installation
  • Cool plugins: category-based sub-blogs, podcasting, RSS planet/aggregator, static pages
  • Robust spam blocking
  • One-click upgrading from any version
  • Can be embedded into your existing web pages
  • Standards-compliant templating through Smarty, remote blogging via XML-RPC
  • BSD-style licensing
  • Multiple Database support (SQLite, PostgreSQL, MySQL, MySQLi)
  • Shared installations can power multiple blogs from just one codebase
  • Native import from earlier blog applications (WordPress, Textpattern, Moveable Type, blog, ...)
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Emesene messenger

Emesene messenger is a platform independent instant messaging client for the Windows Live Messenger network.
Features are
  • Compatible with the latest Window Live Messenger(tm)
  • New plugin set (Plus! colors, Notifications, Mail check, etc.)
  • HTTP connection and proxy support
  • @msn accounts support
  • Better contact list management with Privacy Tab and ability to reject users
  • Improved Offline Messaging experience
  • Support for msn groups
  • No more gui locks
  • Experimental webcam support with a configurator
  • New layout options and improved usability along with customization
  • Tons of new languages supported
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Mibew Messenger

Mibew Messenger (also known as Open Web Messenger) is an open-source live support application written in PHP and MySQL. It enables one-on-one chat assistance in real-time directly from your website.
You should place the button of Web Messenger at your site. Your visitors click the button and chat with your operators who help them.
Main features
  • Unlimited operators, chats, and users
  • Priority queue of visitors
  • Chat button for email signatures
  • Differing buttons on same website
  • English and russian are supported
  • Reconnect automatically if the internet connection went down
  • Agent and visitor "Typing Indicator"
  • Chat transcript emails
  • Sound and Visual alerts
  • Leave a message when you are away
  • Customize chat with your Logo, Name etc.
  • Unicode support for multiple languages
  • Quickly convert text to hyperlinks in chat
  • Not blocked by pop-up blockers
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RemoteTracker

Its a security system allowing you to control your Windows Mobile 5 or 6 based devices remotely, using any other mobile phone, sending SMS formatted messages. If your device has a built in GPS receiver, you will be able to use it in several commands.
RemoteTracker has a lot of useful objectives. The main objective is to track and find your device if you lose it or if it was stolen. It can also be used as a security system for your car, to track your little son/daughter, to see where your truck drivers are and much more. But remember, you can't remotely track anyone without their permission!
With RemoteTracker you will be able to:
  • Locate your device using its coordinates from its internal GPS;
  • See the path someone did with your device using Google Earth;
  • See the information of device's "owner";
  • Self Rescue (Anti Kidnapping) function;
  • Lock/Unlock the device with personal message;
  • SIM card exchange detection;
  • Run installed programs or MortScripts files;
  • Uses AppToDate to keep you with the lastest version;
  • RemoteTracker can answer the commands using SMS, E-Mail or FTP;
  • Localization based on Tower informations for non GPS devices;
  • And a lot more...
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KMess

KMess is an alternative Live Messenger chat client for Linux. It allows Linux users to chat with friends who use Live Messenger in Windows or Mac OS. The strength of KMess is it's integration with the KDE desktop environment, it focus on Messenger-specific features and an easy-to-use interface.
Like many Linux and KDE applications, KMess is free software. Our software's license is the GNU General Public License.
With KMess, chatting with friends using Live Messenger has never been so good - enjoy our great features:
  • Display picture transfers
  • Fast file transfers
  • Custom emoticons, nudges and winks
  • Offline messaging and chatting while invisible
  • Rich and colorful chat styles and logs
  • Chat logging and logs browsing
  • Messenger Plus Live text coloring and formatting
  • Live Mail notifications
  • Block annoying custom emoticons
  • Connectivity from behind firewalls and proxies
  • Good-looking and friendly user interface
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Opal

OPAL implements the commonly used protocols used to send voice, video and fax data over IP networks. Originally part of the OpenH323 project, OpalVoip has grown to include SIP and IAX2. OPAL is released under the Mozilla Public License 1.0 Open Source license. Opal runs on Linux, Windows, MacOSX, xBSD, Solaris, and Windows Mobile.
Opal is a full-featured library that supports a variety of protocols and multi-media fornats. Features include:
  • Low latency RTP stack designed specifically for real-time multimedia
  • Full featured H.323, SIP and IAX2 protocol stacks
  • Audio codecs including G.711, GSM06.10, Speex and iLBC.
  • Video codecs including H.261 and H.263
  • Run-time loadable codec interface for proprietary or codecs such as G.729, H.263, H.264 and MPEG4
  • Completely Open Source using the commercially friendly MPL 1.1 license
Through the use of a platform isolation library called PTLIB, Opal can run on tiny embedded systems or multi-processor servers.
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FreePOPs

FreePOPs is an easily extensible program, which allows access to the most varied resources through the POP3 protocol. Mainly, it can be used to download mail from the most famous webmails, but it could also be used as an aggregator for RSS feeds and much more. This way it is possible to get all your messages in your favorite email client. FreePOPs is free software released under the terms of the GNU/GPL license.

RSSOwl

Applications that collect data from RSS-compliant sites are called RSS readers or "aggregators." RSSOwl is such an application. RSSOwl lets you gather, organize, update, and store information from any compliant source in a convenient, easy to use interface, save selected information in various formats for offline viewing and sharing, and much more. It's easy to configure, available in many many languages and the best of all: It's platform-independent.
RSS ("Really Simple Syndication" or "Rich Site Summary") is a document specification that gives users the power to collect and organize Web-based news and information in a more efficient manner.
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OpenEMM

OpenEMM is a feature-rich enterprise software for professional e-mail newsletters and e-mail marketing. It offers sophisticated bounce management, link tracking, lots of statistics and a script feature to set up transaction mails (data, event and time triggered).
OpenEMM is the first open source application for e-mail marketing. Its code base has been developed since 1999 and is used (as part of the commercial ASP product E-Marketing Manager) by companies like IBM, Siemens and Deutsche Telekom.
OpenEMM offers already more than 95% of the functionality of most commercial products and some features commercial products do not offer right now (i.e. MySQL support).
The main difference is, that OpenEMM is an easy to set up single server solution, while its big brother E-Marketing Manager operates on several distributed servers as software on demand (ASP).
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aMule

aMule is an eMule-like client for the eD2k and Kademlia networks, supporting multiple platforms. Currently aMule (officially) supports a wide variety of platforms and operating systems, being compatible with more than 60 different hardware+OS configurations. aMule is entirely free, its sourcecode released under the GPL just like eMule, and includes no adware or spyware as is often found in proprietary P2P applications. aMule is built upon the wxWidgets (formerly wxWindows) toolkit, which enables it to support multiple platforms.
aMule has most features of the eMule client. These include:
  • eD2k and Kademlia support.
  • aMule is currently available in 28 languages.
  • Support for Source Exchange in order to find sources for files more efficiently.
  • Large queues and the Credit system helps to ensure that everyone will get the file they want and rewards those who actively upload to other users.
  • Support for the compressed transfers and server communication (using zlib), which means faster transfers for compressible files and less strain on servers.
  • Support for Secure Identification, which insures that your user hash can't be stolen in order to inpersonate your client.
  • Support for IP-Filters so that you can keep known bad IPs from connecting to you.
  • Boolean search (AND, OR, NOT).
  • You can have the traditional progress bar for transfers, percents completed or both.
  • aMule supports systrays for both Gnome, KDE and other compatible window managers. Of course, on Windows too.
  • Supports Online Signatures, so you can brag about using aMule.
  • Checks against aggressive clients.
  • Uses MD4 hashes to find sources and ensure that the file matches the original copies of the file, in order to avoid corruption.
  • Intelligent Corruption Handler (ICH) and AICH helps to speed up the correction of corrupted parts.
  • Auto priorities and source management allow you to start many downloads without having to monitor them.
  • The Preview function allows you to look at your videos and archives before they are completed. For video previewing, MPlayer or Xine are recommended but Video Lan Client should work too.
  • Support for categories so that you can organize your downloads.
Download

Gazzera

Gazzera is a peer-to-peer (P2P) file sharing application where you only connect to people you trust. It is targeted at groups of real life friends that wants to share files securely. Differently from public networks like edonkey and gnutella, strangers cannot spy you! It runs on different platforms (Windows and Linux) and architectures. It has a nice GTK interface and uses SSL to encrypt your data.
Features

  • Encrypted: Secure, encrypted protocol based on OpenSSL.
  • Fiend to Friend (F2F): let only your friend share your files.
  • Trust based system: Assign a trust level to your friend, and let their friend connect too.
  • UPNP support: Gazzera will take advantage to UPNP to deal with firewalls. No more manual opening.
  • Multisource and partial download: Download the same file from more than one friend, and from people who are downloading it too.
  • Lightweight: Resources are not wasted. This program uses very little CPU and RAM. Try and compare it with other progrms!
  • Cross-platform: It works on Linux and Windows (Mac support should require only minor work, help wanted)
  • Modularity: The core and the gui are well separated. An unstable version with an http gui is avaiable
  • ED2K and Magnet URI support: It is planned to support popular URI schemes
  • Open Source: The source is GPL and included in every package :)
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MailArchiva

Companies, educational institutions, NGO's and government agencies around the world rely on MailArchiva to archive millions of their emails for long term storage. MailArchiva is a state-of-the-art email archiving system for companies of all sizes. It works in conjunction with popular mail systems to archive all incoming, outgoing and internal emails. In many jurisdictions around the world, the law requires that company emails are kept for up to seven years. MailArchiva is designed to help you comply with legislation such as the Sarbanes Oxley act (SOX), Gramm-Leach Bliley act (GLBA) and the Freedom of information act (FOIA).
MailArchiva is standards based. Emails are stored in a standard format, directly on the filesystem. As a result, there are no hidden database maintenance costs and the integrity of archived information is not subject to database corruption.
MailArchiva employs highly scalable search engine technology.A Google-like web interface is provided, enabling auditors and employees to search through tens of millions of emails at the click of a button.
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RetroShare

RetroShare is a Open Source cross-platform, private and secure decentralized communication platform. It lets you to securely chat and share files with your friends and family, using a web-of-trust to authenticate peers and OpenSSL to encrypt all communication. RetroShare provides filesharing, chat, messages, forums and channels
Features
  • Serverless, encrypted Chat & Filetransfer
  • Multiple simultaneous downloads / uploads
  • Search Friends
  • Messages
  • Forums
  • UPnP / NAT-PMP port forwarding support
  • OpenSSL Encryption
  • DHT support
  • Plugins support
  • Graphical User Interface written with Qt4 toolkit
  • System tray integration
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Streamy

Streamy, imagined by tigrette, is a media recorder. Run streamy, use the Streamy embedded browser, watch your favorite Streams, see them downloaded, drag and drop them to your media player and play them on your iPod. Stay tuned near September for the official Streamy 4.0, and maybe even before !
Streamy opens a multi-tabbed browser, a download view, a media library explorer and a bookmark manager. Use Streamy like your favorite browser and enjoy downloading. Save streams from many technologies, pure HTML, JSON, AMF. Downloads are tagged, converted and stored in the media library.
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Simple Groupware & CMS

Simple Groupware & CMS is an open source enterprise application offering email, calendaring, contacts, tasks, document management, project management, synchronization with Outlook and cell phones, full-text search and many more.
Simple Groupware is s free web based groupware solution written in PHP combining standards like RSS, iCalendar, vCard, IMAP, POP3, SMTP, CIFS, CSV, WebDAV, LDAP and SyncML under one platform.
Unlike other groupware software, Simple Groupware contains the programming language sgsML to enable the quick customization and creation of powerful web applications. Simple Groupware is Free Software, released under the GNU GPLv2 License.
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Network Security Toolkit (NST)

The toolkit was designed to provide easy access to best-of-breed Open Source Network Security Applications and should run on most x86 platforms. The main intent of developing this toolkit was to provide the network security administrator with a comprehensive set of Open Source Network Security Tools.
What we find rather fascinating with NST is that we can transform most x86 systems (Pentium II and above) into a system designed for network traffic analysis, intrusion detection, network packet generation, wireless network monitoring, a virtual system service server, or a sophisticated network/host scanner. This can all be done without disturbing or modifying any underlying sub-system disk. NST can be up and running on a typical x86 notebook in less than a minute by just rebooting with the NST ISO CD/DVD. The notebook's hard disk will not be altered in any way.
NST also makes an excellent tool to help one with all sorts of crash recovery troubleshooting scenarios and situations.
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WURFL

The WURFL is an XML configuration file which contains information about capabilities and features of many mobile devices.
The main scope of the file is to collect as much information as we can about all the existing mobile devices that access WAP pages so that developers will be able to build better applications and better services for the users. This project is open-source and is intended for developers working with the WAP and Wireless
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Aria2 - The Ultra Fast Multi Protocol Download Utility

aria2 is a multi-protocol & multi-source, cross platform download utility. The supported protocols are HTTP(S), FTP, BitTorrent (DHT, PEX, MSE/PE and WEB-Seeding), and Metalink.
aria2 can download a file from multiple sources/protocols and tries to utilize your maximum download bandwidth. It supports downloading a file from HTTP(S)/FTP and BitTorrent at the same time, while the data downloaded from HTTP(S)/FTP is uploaded to the BitTorrent swarm. Using Metalink's chunk checksums, aria2 automatically validates chunks of data while downloading a file like BitTorrent.
There are other alternative applications. But aria2 has 2 distinctive features: (1) aria2 can download a file from several URIs(HTTP(S)/FTP/BitTorrent) and (2) If you give aria2 a list of URIs, aria2 downloads them concurrently. You don't have to wait for the current download queue to finish one file at a time anymore. aria2 tries to utilize your maximum download bandwidth and downloads files quickly.
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Dooble

Dooble is a Secure and Open Source Web Browser that provides solid performance, stability, and cross-platform functionality.
One of the application's most important goals is to safeguard the privacy of its community with a group of integrated privacy features of the browser: search engine, secure messenger, and e-mail client. The installer also provides a means of installing the Dooble browser component.
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qBittorrent

The qBittorrent project was created in March 2006 with the idea of developing a new Bittorrent client for Linux (and possibly other systems) that would be easy to use, good looking, featureful but lightweight.
qBittorrent is an attempt to provide a µtorrent equivalent on Linux. It is a Free Software released under the GNU GPL license. qBittorrent is based on Arvid Norberg's libtorrent-rasterbar.
qBittorrent can now be considered as a good alternative to other bittorrent clients. It provides a lot of features such as:
  • A polished Graphical User Interface written with Qt4 toolkit
  • UPnP / NAT-PMP port forwarding support
  • Encryption support (compatible with Azureus)
  • Multiple simultaneous downloads / uploads
  • A well-integrated search engine
  • DHT (trackerless) support
  • uTorrent Peer eXchange support (PeX)
  • Directory scanning with automated download of torrents inside
  • Good internationalization (~25 languages supported)
  • Selective download of files in a torrent
  • Media File previewing while downloading
  • Torrent trackers edition and prioritizing
  • Seeders / Leechers displayed in download list
  • Styles support
  • Files prioritizing in a torrent
  • Torrent download in correct order
  • System tray integration
  • Unicode support
  • Torrent downloading directly from their url
  • Connection though a proxy
  • IP Filtering similar to the one in eMule or PeerGuardian
  • Allow to buy your downloads thanks to Sharemonkey
  • Torrents queueing and prioritizing
  • Web user interface for remote control
  • µTorrent spoofing to avoid ban (new!)
  • Magnet URI support (new!)
  • Automatic download from RSS feeds with advanced filtering(new!)
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PHPMailer

All new class.smtp.php that smaller and fast. The package is a significant release that fully exploits PHP5/6 Exception Handling with exceptional ability to pass back the captured errors to your own scripts. The new version includes a test script that helps you test your server and provides a cut-and-paste window to help you build your own scripts. Tons of new examples including basic and advanced scripts that use Mail(), Sendmail (or Qmail), SMTP, Gmail, and a totally new script for SMTP / Database mailing lists.

Full Featured Email Transfer Class for PHP. PHPMailer features:
  • Supports emails digitally signed with S/MIME encryption!
  • Supports emails with multiple TOs, CCs, BCCs and REPLY-TOs
  • Works on any platform.
  • Supports Text & HTML emails.
  • Embedded image support.
  • Multipart/alternative emails for mail clients that do not read HTML email.
  • Flexible debugging.
  • Custom mail headers.
  • Redundant SMTP servers.
  • Support for 8bit, base64, binary, and quoted-printable encoding.
  • Word wrap.
  • Multiple fs, string, and binary attachments (those from database, string, etc).
  • SMTP authentication.
  • Tested on multiple SMTP servers: Sendmail, qmail, Postfix, Gmail, Imail, Exchange, etc.
  • Good documentation, many examples included in download.
  • It's swift, small, and simple.
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Ayttm - Universal Instant Messaging Client

Ayttm is an instant messaging (aka chat) client that provides all-in-one chat functionality for several major instant messaging services from one simple program. Ayttm "Contacts" allow you to refer to several accounts of the same person from a single contact name, making it one of the cleanest and simplest clients to use.
Ayttm is the heir of the Everybuddy project, and aims to continue improving the program and addressing its shortcomings. Our primary goal is to provide a messenger which is :
  • simple: Ayttm should work nicely without having to first go through a complicated configuration procedure. The preferences should be simple and minimal.
  • stable: Ayttm should not crash when you use it.
  • intuitive: Ayttm should be almost instantly usable by my mother ;)
  • flexible: Ayttm supports multiple protocols and they should be supported in an integrated manner (common interface, for example), without limiting protocol-specific features support. Ayttm currently handles Yahoo!, MSN, Jabber, IRC, AIM and ICQ.
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winPenPack: Portable Software Collection

Open Upload is a PHP application to create a private / public file download server similar to MegaUpload or RapidShare. Open Upload has been designed to be extendable. These are the main features:
  • Access control by groups
  • Template Driven
  • Internationalization
  • Vast Database Support (MySQL, Postgress, Flat file)
  • Multiple user authentication backends (database, LDAP, AD)
  • Plugins to control file upload/download limits / functionality (password protection, captcha, email, banned IP,)
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OpenSIPS/OpenSER-a versatile SIP Server

OpenSIPS (Open SIP Server) is a mature Open Source implementation of a SIP server. OpenSIPS is more than a SIP proxy/router as it includes application-level functionalities. OpenSIPS, as a SIP server, is the core component of any SIP-based VoIP solution. With a very flexible and customizable routing engine, OpenSIPS 'unifies voice, video, IM and presence services in a highly efficient way, thanks to its scalable (modular) design.
What OpenSIPS has to offer, comes in a reliable and high-performance flavour - OpenSIPS is one of the fastest SIP servers, with a throughput that confirms it as a solution up to enterprise or carrier-grade class.
OpenSIPS can be used as :
  • SIP registrar server
  • SIP router / proxy (lcr, dynamic routing, dialplan features)
  • SIP redirect server
  • SIP presence agent
  • SIP IM server (chat and end-2-end IM)
  • SIP to SMS gateway (bidirectional)
  • SIP to XMPP gateway for presence and IM (bidirectional)
  • SIP load-balancer or dispatcher
  • SIP front end for gateways/asterisk
  • SIP NAT traversal unit
  • SIP application server
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FrostWire

FrostWire, a Gnutella Peer-to-Peer information sharing client for the Gnutella network.is a collaborative effort from many Open Source and freelance developers from all around the world. In late 2005, concerned developers of LimeWire's open source community announced the start of a new project fork "FrostWire" that would protect the developmental source code of the LimeWire client and any improvements to the Gnutella protocol design. The developers of FrostWire give high regard and respect to the GNU General Public License and consider it to be the ideal foundation of a creative and free enterprise market.
Features
  • Completely Free & Open Source!
  • Faster Download Speeds
  • No Spyware. No Adware. Guaranteed.
  • iTunes Compatible!
  • Faster Torrent Speeds
  • Friendly Online Chat Rooms
  • Bittorrent Support!
  • Even More Connections
  • New & Improved Skins
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Jitterbit - Open Source Integration

Jitterbit is the popular data & application integration suite that provides business users a quick, cost-effective and simple way to design, deploy and manage a broad range of integration solutions. Over 5,000 organizations currently use Jitterbit to connect data between their enterprise applications, legacy systems, and cloud and SaaS applications. Jitterbit has out-of-the-box support for all major databases, on-premises applications, and cloud-based systems. Jitterbit Community Edition is available under the open source Jitterbit Public License (JPL).
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FileZilla

FileZill client and a server are available. FileZilla is open source software distributed free of charge under the terms of the GNU General Public License. FileZilla Client is a fast and reliable cross-platform FTP, FTPS and SFTP client with lots of useful features and an intuitive graphical user interface.
Features of FileZilla Client
  • Easy to use
  • Supports FTP, FTP over SSL/TLS (FTPS) and SSH File Transfer Protocol (SFTP)
  • Cross-platform. Runs on Windows, Linux, *BSD, Mac OS X and more
  • IPv6 support
  • Available in many languages
  • Supports resume and transfer of large files >4GB
  • Powerful Site Manager and transfer queue
  • Bookmarks
  • Drag & drop support
  • Configurable transfer speed limits
  • Filename filters
  • Directory comparison
  • Network configuration wizard
  • Remote file editing
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DavMail POP/IMAP/SMTP/CalDav/LDAP Exchange Gateway

DavMail is a POP/IMAP/SMTP/Caldav/LDAP exchange gateway allowing users to use any mail/calendar client (e.g. Thunderbird with Lightning or Apple iCal) with an Exchange server, even from the internet or behind a firewall through Outlook Web Access. DavMail now includes an LDAP gateway to Exchange global address book to allow recipient address completion in mail compoze window and full calendar support with attendees free/busy display. DavMail gateway is implemented in java and should run on any platform. Releases are tested on Windows, Linux (Ubuntu) and Mac OSX. Tray does not work on MacOS and is replaced with a full frame. Tested successfully with the Iphone (gateway running on a server).
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Mumble

Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming. Mumble uses Qt, the Cross-Platform Rich Client Development Framework. Qt is used for cross-platform GUI, network and database functions. Mumble's superior audio quality comes in large parts from Speex, a high quality voice codec and DSP library for echo cancellation and denoising. Mumble has been analyzed with Klocwork source code analysis, the most accurate and comprehensive tool for finding critical programming errors and security vulnerabilities. Murmur uses ZeroC Ice as a RPC framework, enabling flexible remote control.
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Elastix

Elastix is an appliance software that integrates the best tools available for Asterisk-based PBXs into a easy-to-use interface. It also adds its own set of utilities to make it the best software package available for open source telephony.
The features provided by Elastix are many and varied. Elastix integrates many software packages, each including their own set of great features. However, Elastix adds new interfaces for control and reporting of its own, to make it a complete package.
Following are the few features of Elastix
  • Call recording with a Web interface to search recordings
  • Voicemail and Voicemail-to-Email functionality
  • Flexible IVR configurable by a Web Inteface.
  • Voice synthesis support
  • Extension Batch Tool to create large numbers of extensions using CSV files.
  • Integrated Echo Canceller
  • Phone provisioner, configurable via a Web Interface. Allows configuration of a large number of IP phones in a short time for supported phones.
  • Support for video phones
  • Report of channels used by technology (SIP, ZAP, IAX, Local, H323)
  • Support for call queues including static and dynamic agents
  • Conference Center. Allows setup of temporary scheduled conferences or static conference rooms via Web Interface * Support the following protocols: SIP, IAX, H323, MGCP, SKINNY, etc
  • Supported codecs: ADPCM, G.711 (A-Law & μ-Law), G.722, G.723.1 (pass through), G.726, G.729 (through a commercial license), GSM, iLBC
  • Support for analog interfaces as FXS/FXO (PSTN/POTS)
  • Support for digital interfaces as E1/T1/J1 through protocols as PRI/BRI/R2
  • Support for bluetooth interfaces through cell phones (chan_mobile)
  • Caller ID supported.
  • Multiple Trunk support.
  • Incoming and outgoing routes with support dial pattern matching which gives flexibility
  • Support for ring groups
  • Support for paging and intercom for supported IP Phones
  • Support for call routing based on Time Conditions
  • Support for PIN sets
  • Direct Inward System Access (DISA) - Direct access to the PBX via External Line
  • Callback * Web based file editor to manually edit the Asterisk configuration files
  • Web based interface to the Asterisk console called the CLI
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WinSCP

WinSCP is an open source free SFTP client and FTP client for Windows. Legacy SCP protocol is also supported. Its main function is safe copying of files between a local and a remote computer.
Features

  • Graphical user interface
  • Translated into several languages
  • Integration with Windows (drag&drop, URL, shortcut icons)
  • U3 support
  • All common operations with files
  • Support for SFTP and SCP protocols over SSH-1 and SSH-2 and plain old FTP protocol
  • Batch file scripting and command-line interface
  • Directory synchronization in several semi or fully automatic ways
  • Integrated text editor
  • Support for SSH password, keyboard-interactive, public key and Kerberos (GSS) authentication
  • Integrates with Pageant (PuTTY authentication agent) for full support of public key authentication with SSH
  • Explorer and Commander interfaces
  • Optionally stores session information
  • Optionally supports portable operation using a configuration file in place of registry entries, suitable for operation from removable media
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SquirrelMail

SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers. It has very few requirements and is very easy to configure and install. SquirrelMail has all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation.
SquirrelMail is licensed under the GNU General Public License (GPL), so there are no license fees to worry about.
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OpenGoo

OpenGoo is a complete online solution focused on improving productivity, collaboration, communication and management of your teams. It is a complete solution for every organization to create, collaborate, share and publish all its internal and external documents. You and your team can create and collaborate on:
  • Text documents
  • Spreadsheets (coming soon)
  • Presentations
  • Task Lists
  • E-mails
  • Calendars
  • Web Links
  • Contacts
OpenGoo gives you all the tools to manage the work of all the divisions of your company. You can plan and manage all your projects, easily following the status of every task. OpenGoo is Open Source, and complies with all relevant Open Standards. You are free of vendor lock-in. You can customize it and extend it however you want. You can own your information.
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PortableApps.com Suite

PortableApps.com Suite™ is a complete collection of portable apps including a web browser, email client, office suite, calendar/scheduler, instant messaging client, antivirus, audio player, sudoku game, password manager, PDF reader, minesweeper clone, backup utility and integrated menu, all preconfigured to work portably. Just drop it on your portable device and you're ready to go.
The PortableApps.com Suite and Platform is free. It contains no spyware. There are no advertisements. It isn't a limited or trial version. There is no additional hardware or software to buy. You don't even have to give out your email address. It's 100% free to use, free to copy and free to share.
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Pidgin

Pidgin is a chat program which lets you log in to accounts on multiple chat networks simultaneously. This means that you can be chatting with friends on MSN, talking to a friend on Google Talk, and sitting in a Yahoo chat room all at the same time. Pidgin runs on Windows, Linux, and other UNIX operating systems.

Pidgin is compatible with the following chat networks out of the box: AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, Novell GroupWise Messenger, QQ, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. It can support many more with plugins.

Pidgin supports many features of these chat networks, such as file transfers, away messages, buddy icons, custom smilies, and typing notifications. Numerous plugins also extend Pidgin's functionality above and beyond the standard features.

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VMukti - IP Communications Suite

VMukti is leading Asterisk/ Yate enabled p2p Video IP Communications Suite for Web / PSTN. These serverless broadband ready platform enable OS community to save 90% on capital & operating costs over proprietary software for conferencing & Call Center.

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CuteFlow

CuteFlow is a webbased open source document circulation and workflow system. Users are able to define "documents" which are send step by step to every station/user in a list.
It's an electronical way for doing (i.e. internal) document circulations. A document can be assembled from input fields of different types. The fields can be filled with values by the receiver of the document directly in the users E-Mail-Client. After a completed circulation you will have a completely filled document. Also attachments to the document are possible (i.e. for illustration material).
All operations like starting a workflow, tracking, workflow-definition or status observation can be done within a comfortable and easy to use webinterface.
Main Features
  • Free and Open Source!
  • Webbased User Interface
  • Easy to install, setup and use
  • Integration of workflow documents in e-mail message
  • Support for different workflow "mailingslists"
  • Unlimited amount of sender, fields, slots, receiver...)
  • Workflows can attach data and files
  • OS-Independent through the usage of PHP
  • Flexible user management with substitutes
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aMSN

aMSN is a free open source MSN Messenger clone, with features such as:
  • Offline Messaging
  • Voice Clips
  • Display pictures
  • Custom emoticons
  • Multi-language support (around 40 languages currently supported)
  • Webcam support
  • Sign in to more than one account at once
  • Full-speed File transfers
  • Group support
  • Normal, and animated emoticons with sounds
  • Chat logs
  • Timestamping
  • Event alarms
  • Conferencing support
  • Tabbed chat windows
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Azureus (Vuze - Bittorrent Client)

Azureus is a BitTorrent client written in Java. The BitTorrent protocol is a new way of exchanging or distributing data over the internet.
  • Find torrents easily
  • Powerful torrent meta-search with login support for private trackers
  • Discover high quality content on the Vuze HD network
  • Download fast
  • Download quickly and efficiently with intelligent bandwidth, queue and speed management
  • Download or stream high-quality content from the Vuze HD Network
  • Play on all your screens
  • Sit back and savor the high-quality entertainment experience
  • Now on iPhone, iPod, Apple TV, Xbox 360, Playstation 3, PSP and TiVo
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Beehive Forum

Beehive is an open-source project for creating a high-configurable frame-based discussion forum. Beehive Forum has a lot of features. The main ones are listed below:
  • Frame-based layout, for easy navigation.
  • Reply-to-user posting and e-mail notification.
  • Powerful HTML posting, without security risks.
  • Extendable user profiles.
  • Flexible relationships system.
  • Private Messaging system.
  • Multiple style options, including dyslexia support.
  • Advanced word-filtering facility.
  • Comprehensive user permissions.
  • Full, easy to use admin tools.
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Internet Discussion Boards

Internet Discussion Boards is a message board system by Game Maker 2k. Its very easy to set up. Your web host needs PHP and MySQL. Internet Discussion Boards is Open Source so you can make changes to it under the terms of the Revised BSD License.
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TinTin++ Mud Client

TinTin++, aka TT++, is a free Mud client for Windows, Linux, and Mac OS X. A Windows / Vista port named WinTin++, using the PuTTY terminal, is available for those who do not use Cygwin (A Linux/Unix emulator for Windows). Besides MUDs (which are free online text games), TinTin++ can also be used as a client to play MUSH, MUCK, MOO, MU*, or Rogue games, which are online text game variants. Connecting to a Linux server or a telnet BBS is possible as well.
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Free Mobile Applications