Signal
TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or...
Twinkle is a soft phone for your voice over IP communcations using the SIP protocol. You can use it for direct IP phone to IP phone communication or in a network using a...
Twinkle is a soft phone for your voice over IP communcations using the SIP protocol. You can use it for direct IP phone to IP phone communication or in a network using a SIP proxy to route your calls.
voice-chat Discontinued sip softphone zrtp telephony endpoint
TextSecure and RedPhone have been merged to create Signal! Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or...
Free Open Source Mac OS X Windows Linux Android iPhone Android Tablet iPad Chrome
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...
Free Open Source Mac OS X Windows Linux Android BSD Web
Silent Phone – Secure Encrypted Video & Voice Mobile Phone Calls You now have the ability to have secure encrypted phone calls between Silent Circle members...
Commercial Android iPhone Android Tablet iPad
Encrypted secure Calls with CallProtector! App available on iOS & Android With CallProtector you can call others in a secure way, you only need working...
Free Android iPhone