sip phone

Simple color picker for developers.

Free phone calls from the desktop.

Sync with your Windows Phone mobile device.

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 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