Open Source C Communications Software

Fldigi is a modem program for most of the digital modes used by radio amateurs today: CW, PSK, MFSK, RTTY, Hell, DominoEX, Olivia, and Throb are all supported. It can help calibrate a sound card to a time signal and do frequency measurement tests. NOTICE: You must proceed to the Files section to locate the correct fldigi, flrig etal download for your particular operating system. Do not blithely use the big green Download button! Use the "Files" menu item or the "Browse All Files" link.

See https://pidgin.im/about/ for more information. Pidgin is an instant messaging program which lets you log in to accounts on multiple chat networks simultaneously. It 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, MXit, Novell GroupWise Messenger, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. It is written in C and makes heavy use of GLib and GTK+. Finch is a command line instant messaging program. It also lets you log in to accounts on multiple chat network simultaneously, and it is compatible with the same chat networks as Pidgin. It is written in C and makes heavy use of GLib and ncurses.

ApexDC™ is an innovative Direct Connect client based on the DC++ and StrongDC++ projects. Direct Connect provides a rare blend of seamless file sharing and community based chat and messaging between users. ApexDC features plugins and scripting through Lua and much more. Both operators and users alike should find it a pleasant experience. Note: as of May 28th 2016 ApexDC is now primarily distributed as two separate installers one targetting 32bit and the other 64bit operating systems. Additionally XP compatible binaries are now only offered as a separate download from the files section.

Please make sure to read this page: http://sourceforge.net/p/sipe/wiki/Frequently%20Asked%20Questions/ A third-party Pidgin/Adium/Miranda/Telepathy plugin for the extended version of SIP/SIMPLE used by various products: * Skype for Business * Microsoft Office 365 * Microsoft Business Productivity Online Suite (BPOS) * Microsoft Lync Server * Microsoft Office Communications Server (OCS 2007/2007 R2) * Microsoft Live Communications Server (LCS 2003/2005)

Gammu is a cellular manager for mobile phones/modems. It contains libraries and functions for ringtones,logos,phonebook,SMS,etc. (used by external software), a command line version (with backup/restore) and SMS gateway (with MySQL and PostgreSQL supp

Kiax is a softphone (soft phone, VoIP client) with a simple and comfortable user interface for making VoIP calls to Asterisk PBX. It depends on the iaxclient library to use Asterisk's IAX2 protocol for easy call configuration and audio setup.

Anope Services are built off of the original Epona code written by Lara which is built off of IRC Services. These services have advanced the original Epona code and include new features such as Modules, Mysql, and Defcon Mode.

Modem Manager GUI is a simple GTK based graphical interface compatible with Modem manager, Wader and oFono system services able to control EDGE/3G/4G broadband modem specific functions. You can check balance of your SIM card, send or receive SMS messages, control mobile traffic consuption and more using Modem Manager GUI.

P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.

Mailman is the GNU mailing list manager. It provides standard list management features, integrated with a web interface. Please note: the subversion repository has been retired. Please see http://wiki.list.org/x/DgAJ for details.

Claws Mail is a GTK+ based, lightweight, and fast e-mail client and newsreader. Supports POP3, APOP, IMAP, SMTP, SMTP AUTH, NNTP, LDAP, multiple accounts, spell-checking, addressbook, SSL, GPG, filtering, i18n, & more. It is further extended by plugins.

QmailAdmin is a web interface for managing email addresses in virtual domains created by Vpopmail.

A text mode reader for RSS and Atom feeds.

Graphical user interface for the Overnet and eDonkey2000 file-sharing command line clients. Runs on Linux, *BSD, MacOSX, and MS Windows.

A fork of pidgin which aims to provide minor features that have not been addressed by the pidgin development team (including manual textbox resizing). See funpidgin.sf.net for details.

A handy stand-alone GTK+ client for accessing your favorite DX Cluster or Reverse Beacon Net server via telnet over TCP/IP.

This is a collection of plugins for Miranda Instant Messenger. If you want to learn more about Miranda IM please visit the official website at http://www.miranda-im.org/.

Jabberwocky is a jabber client software for Amiga Computers. It is open source and released under the GNU GPL License.

ClamMail is POP3 email proxy for Windows with integrated ClamAV antivirus engine. ClamMail is an Windows antivirus that protects your PC from viruses transferred via mail. Works with Outlook,Thunderbird,Eudora and many others using popular POP3 protocol

DB Hub is a Linux/Unix software designed to be a Direct Connect hub. It's based on Open DC Hub code but has many more enhancements. Documentation is available on http://dbhub.zendor.eu/ (still incomplete, but updated almost every day)

Everything for the best Polish UDP LAN communicator Wszystko dla najlepszego polskiego chata sieciowego - RivChat

Open source, graphical client for G*adu-G*adu IM for BeOS

GNU Gadu is an instant messanger application, designed to work with IM protocols popular in Poland (but not only). This is a plugin based application, even GUI ( which uses GTK+) is a plugin. Currently we support: Gadu-Gadu, Tlen.pl, Jabber

[PL] Projekt rozbudowy systemu informatycznego IV LO w Bytomiu - system portow, serwery, CMS itp. [EN] A project which aims to enhance IT system of IV High School in Bytom, Poland - ports system, servers, CMS, etc.

TleenX jest otwartym klientem sieci Tlen.pl. Jego GUI wykorzystuje przenośną bibliotekę Gtk+-2.0.