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Open Phone Abstraction Library (OPAL) is a C++ multi-platform, multi-protocol library for Fax, Video & Voice over IP and other networks. Also included is the Portable Tool Library (PTLib) which is a C++ multi-platform abstraction library and collection o
Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming. It includes game linking, so voice from other players comes from the direction of their characters, and has echo cancellation so the sound from your loudspeakers won't be audible to other players.
wxCommunicator is a cross platform SIP softphone written in C++ utilizing customized sipXtapi user agent library and wxWidgets 2.8.9 GUI library. For a list of supported features see http://wxcommunicator.sourceforge.net/features.html .
...The SIP clients make use of Microsoft UCC API SDK, ensuring the highest quality of audio and video. Compatible with Office Communications Server.
See also open source, cross-platform:
1) simple messenger Brief Msg at http://briefmsg.org
2) MUVConf is a multi-user video conferencing, see demo video http://youtu.be/YrBU-Aqtvrk, download https://code.google.com/p/muvconf/downloads/list
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VMukti open source 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 &
This is a general-purpose library for communicating with the Skype API. It is simple, cross-platform, and easy to use. The library currently works on Windows (Win32) and Linux (X11/D-BUS).
Chabber is an extensible XMPP-based Instant Messaging application. It is a generic, portable application that follows the standard protocols for Instant Messaging and gives users a lot of advanced functionalities. It provides a platform for plugins.
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vox-attendant is a telephony voice enabled virtual receptionist designed to work with VoiceXML and includes a distribution for the Voxeo Prophecy platform. It provides a web based interface for managing the directory.
PloneSkype takes communication on the plone platform beyond the asynchronous mode of email, discussion boards and blogs. PloneSkype allows the Plone portal members to communicate with other portal members via Skype.
MySXP Client: Is an ActiveX COM Microsoft Windows platform; The objective of this Component is to create a terminal service for a wide open server services as, IM, RPC for client app., RPC, DB terminal, Multiplayer Game client, WebCam, voIP Client.
OpenIM is a instant messenger system utilising the XMPP (Internet-standard communication protocol) and is built on the Java platform. It supports many popular systems (MSN, ICQ, AIM, Jabber, Google Talk etc.) and supports Voice (and Video) Over IP.
JCPPhone is a cross platform VoIP client written in JAVA and C++. The GUI is in JAVA and uses JNI to implement the h323 stack based on OpenH323. It compiles and runs on Linux, and Windows.
Compatible with netmeeting, gnomeeting, cphone, and any H323 Cli
Speak Freely is a Cross Platform Internet telephony (Voice Chat) application which provides high quality voice grade audio with GSM and CELP compression and encryption with DES, Blowfish, and IDEA ciphers.
Refering to recent news: The maintainers will never add any unwanted extra software in the zip download file but we can only speak for our selves.
CaminoTalks is a open source, cross platform videoconferencing system. It is designed to work behind a firewall and can have mutiple connections. It works with all popular Messengers like MSN, AIM, ICQ, GAIM. It overcome Netmeeting/H323.Videoconference.
CPhone is a cross platform voip client which uses the H323 protocol.
It compiles and runs on Linux, BSD, Windows and Mac (OS X) boxes.
It is based on the libraries from www.openh323.org and Trolltech.
Soco is a distributed social software which based on the eclipse and P2P technique. Seco will facilitate the communication of people. Based on this platform, people can share file, BBS, chat, send email,play games, make friends and so on.