Name Description
Mumble Low latency encrypted VoIP client
Ekiga H.323 and SIP compatible VoIP client
Jabbin Jabber IM client with VoIP support
Kiax IAX VoIP softphone
Twinkle Voice over Internet Protocol (VoIP) SIP Phone (GUI)
Skype client for Skype VOIP and instant messaging service
Asterisk GUI Client GUI client application for the Asterisk open-source PBX
SJphone VoIP Internet phone
WengoPhone SIP-based software telephone with video and chat (transitional package)
X-Lite VoIP Internet phone
Kphone Voice over IP (VoIP) phone application
Zfone Secure Voice over IP (VoIP)
FreePBX Set up an Asterisk VOIP PBX
Trixbox Setup a VoIP phone system
Shockvoice Server voice-over-ip communication tool similar to Teamspeak
Linphone SIP softphone - graphical client
AsteriskNOW GUI for the Asterisk IP PBX software

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