Browse free open source Telephony software and projects below. Use the toggles on the left to filter open source Telephony software by OS, license, language, programming language, and project status.
Windows tool to read SIM card information and content
Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP
Go to github.com/vlm/asn1c for the latest version.
Cryptofon - a safe phone with integrated encryption.
Universal Framework to audit Voip protocols's security