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... Free Open Source Mac Windows Linux Android iPhone ... Android Tablet iPad Chrome End-to-end encryption Encrypted chat Security focused Encrypted calls ... Encrypted Connection Self destructing messages Texting Video calling Voice Call Built-in File transfer Color coding Cross-platform Encrypted VoIP calls Forward Secrecy Group chat Mobile friendly Works Offline Protected by Password Based on phone number Privacy protection Private messaging Send files Voice messages Add a feature 336 Like
Linphone Linphone is an internet phone or Voice Over IP phone (VoIP). With Linphone you can communicate freely with people over the internet, with voice, video, and text instant... Free Open Source Mac OS X Windows Linux Web Windows Mobile ... Android iPhone Android Tablet Windows Phone iPad Xfce Encrypted VoIP calls Video calling Add a feature 102 Like
Ekiga Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323 and SIP protocols. It supports many... Free Open Source Windows Linux PortableApps.com No login Portable Video calling Add a feature 63 Like
CSipSimple csipsimple will allow native sip for android device. It relies on the pjsip SIP stack and use the pjsip-jni project. The use of this native library will ensure a... Free Open Source Android No features added Add a feature 34 Like
Sipdroid Free and open-source SIP/VoIP Client. Free Open Source Android No features added Add a feature 3 Like
CallProtector 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 Encrypted calls Encrypted chat Add a feature 2 Like
