The Taridium ipbx is a complete software-based VoIP PBX system that replaces a traditional proprietary hardware PBX. It runs on Linux without the need for extra software licenses, and is based on the SIP standard. It supports many phones and is available for free in a 5 user version.
BigBlueButton is a Web conferencing system that focuses on usability, modularity, and clean design, both for the user and developer. It implements real-time sharing of voice, Web cams, desktops, slides, and chat messages to provide remote students with a high-quality learning experience. Unlike other conferencing systems, the desktop sharing works on Mac OS X, Unix, and PC computers, and there is no hard-coded limit on the number of simultaneous Web cams.
Voisin is a social networking and group collaboration platform. It's a complete Enterprise 2.0 solution that combines all of the technologies you need to implement Enterprise 2.0 best practices in order to help your work force realize the full benefit of social collaboration and knowledge sharing as they work to achieve group goals. It is based on the OpenEdit Framework.
Video Conference Flash Plugins provides Flash/ActionScript 3 plugins that provide the minimum functionality for accessing a webcam and video - live or recorded - from a Flash Media Server such as OSflash Red5, FMS, or tape/rtmpy. The plugins take "FlashVars" parameters to control almost everything. They can be used to create video conferencing Web sites, video chat sites, or YouTube clones.
Apache OpenMeetings is a multi-language customizable video-conferencing and collaboration system. It supports audio/video and allows you to see the desktop of any participant. It includes a whiteboard, the ability to import a variety of image formats, invitations, a moderation system, backup and language modules, private and public conference rooms, and the ability to record meetings. The project also provides integrations for Asterisk, Jira, Confluence, Moodle, Sakai, and SugarCRM, and connectors for LDAP and ADS.
Kablink Teaming (formerly ICEcore) is a collaboration platform that includes everything an enterprise needs to handle team coordination. It provides teams with real-time communication using IM, conferencing, and application sharing, as well as document sharing and content management features that allow organizations to create project teams and share content amongst team participants. Users can create a wiki or blog for a particular project and have it available to anyone in the company. It also features searching, a Web form builder, version and author history, and more. It includes a workflow engine that allows custom business processes to be implemented.