sip phone

The easiest way to convert video to Mobile Phone supported formats on Mac OS.

Collanos Phone is a VoIP softphone and multi-protocol Instant Messenger.

Collanos Phone is a VoIP softphone and multi-protocol Instant Messenger

SIP and IAX/IAX2 software phone.

SIP softphone with PBX-like features.

Phone ringtone creator.

Phone Disk is a tiny program which runs in the system tray of your Mac.

Phone dialer plugin for Apple Address Book.

SkypeMate is the driver for the USB phone or adapter

Internet phone and instant messenger (was SIP Communicator).