Coccinella
Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration with other people.
Jitsi (previously SIP Communicator) is an audio/video and chat communicator with full end-to-end encryption that supports protocols such as SIP, XMPP/Jabber, ICQ/AIM, Windows Live, Yahoo!, GTalk/Hangouts extensions, as well as OTR, ZRTP...
jitsi (previously sip communicator) is an audio/video and chat communicator with full endtoend encryption that supports protocols such as sip, xmpp/jabber, icq/aim, windows live, yahoo!, gtalk/hangouts extensions, as well as otr, zrtp, etc.it can handle every firewall, and has many other useful features.
jitsi is completely open source / free software, and is freely available under the terms of the gnu lesser general public license.
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Video calling Multiple Account support Group chat WebRTC End to end encryption Multiple protocols iPhone/iPod sync OTR
Productivity Developer Tools Social Business and Commerce Utilities File Sharing
chat-clients instant-messaging video-calling video-conferencing voice-chat multiple-account-support xfce group-chat webrtc end-to-end-encryption im-client jabber jabber-clients multi-protocol xmpp yahoo-messenger aim-clients audio-conferencing desktop-sharing external-contact-lists google-talk google-talk-client group-call hangouts icq-clients iphone-sync ldap msn-messenger open-source-projects opus-codec otr plugins provisioning sip softphone xmpp-clients zrtp
Coccinella is a free and open-source cross-platform instant messaging client with a built-in whiteboard for improved collaboration with other people.
Free Open Source Mac OS X Windows Linux BSD
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