Comparison of VoIP software

Voice-over- IP ( VoIP) software is used to make phone calls over the Internet. VoIP calls are often cheaper than conventional phone calls. Because calls over the Internet can be intercepted easily, use some encryption provider.

VoIP clients

Server-based solutions

For PDAs

For mobile phones

Frameworks and Libraries

Server Software

Client (computing) Freeware Session Initiation Protocol Session Description Protocol Real-Time Transport Protocol Blowfish (cipher) Advanced Encryption Standard Skinny Call Control Protocol Trivial File Transfer Protocol Secure Real-Time Transport Protocol Coccinella (software) XMPP InterAsterisk eXchange Transport Layer Security Interactive Connectivity Establishment X-Lite H.323 Gizmo5 ICQ Adware AOL Instant Messenger H.263 NAT Port Mapping Protocol Shareware Jitsi GNU Lesser General Public License Off-the-Record Messaging Remote desktop (disambiguation) KDE KPhone NAPTR record Linphone IBM Sametime T.120 Mumble (software) BSD licenses Intercity-Express Phoner Skype Android (operating system) Twinkle (software) ZRTP FreeBSD Zfone PGPfone RetroShare OpenSSL Jajah H.261 G.711 Windows Mobile IOS Google Talk Myspace Hyves Java Platform, Micro Edition S60 (software platform) Viber Windows Phone Series 40 Forfone Mozilla Public License Telepathy (software) AskoziaPBX Landline Integrated Services Digital Network SIP Express Router Proprietary software
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