Ostel: Encrypted Phone Calls
A tool for having end-to-end encrypted phone calls. This is a public testbed of the Open Secure Telephony Network (OSTN) project, with the goal of promoting the use of free, open protocols, standards and software, to power end-to-end secure voice communications on mobile devices, as well as with desktop computers.
- August 2017: Ostel is permanently offline. Learn more here: https://guardianproject.info/2017/08/10/ostel-co-is-permanently-offline/
- Find out more on our Wiki.
- Download a supported app (Android, iPhone, Blackberry, Nokia, Windows, Mac OS X, GNU/Linux).
- Setup your App.
- View the source code.