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• OStel in 5 toolboxes
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  Ostel is a tool for having end-to-end encrypted phone calls. Our goal is to promote 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.

  tagged: android, encrypted, guardian, guardianproject, OS, ostel, phone, privacy, private, Security, SIP, tel, telephone, voip, wsjdata, zrtp