Free, world-wide, private phone calls for iPhone. Private messaging coming soon!
A Gitter client for Windows Platform
Gaia is a HTML5-based Phone UI for the Boot 2 Gecko Project. NOTE: For details of what branches are used for what releases, see https://wiki.mozilla.org/Release_Management/B2G_Landing
A notepad and to do app with both phone and tablet UI. Syncs with your existing Google account to keep your notes and tasks backed up in the cloud
OpenVBX is a web-based open source phone system for business.