Free VoIP Software for Mac

Express Talk is a free VoIP SIP based softphone for Mac OS X. it allows you to call other softphone users for free or normal telephones if you sign up to a SIP Gateway Service. Features: Configure up to 6 lines on the one phone with the ability to put...

An ANSI-BBS terminal designed to connect to remote BBS systems via telnet, rlogin, SSH, or a modem. Supports ANSI music and the IBM CP437 charset when possible. Will run from a console, under X11 using XLib, or using SDL. Requirements: Mac OS...

Yuuguu is a communications tool that enables instant messaging, screen sharing, and conference calling, among other features. Add your team members or clients via the "Find Contacts" button at the top of your contact window to build a network of people...

The Hipsip Bridge allows users to connect to the free Hipsip service in order to make Skype calls from their mobile browser for just the price of a local phone call. With Hipsip users are no longer stuck in front of their computers when using Skype. Calls...

Spaz is an open source Twitter client for Mac, Windows, and Linux. The current version, known as Spaz.AIR, uses the Adobe Integrated Runtime (AIR). Requirements: Mac OS X, Adobe Integrated...

SMS Widget for Mac OS X from CardBoardFish is a complete Dashboard text messaging solution, making it quick and easy to send and receive texts on your Mac. It is compatible with Mac OS X 10.4 Tiger and later. Requirements: Mac OS...

Asterisk is a complete PBX in software. It provides all of the features you would expect from a PBX and more. Asterisk does voice over IP in three protocols, and can interoperate with almost all standards-based telephony equipment using relatively...

With each release, XMeeting is becoming more and more stable, compatible and usable. Starting with the release of version 0.2, XMeeting has almost all features included with ohphoneX and already has many important new features that ohphoneX never had....

Mac Face is a Facebook notification application for Mac OS X. Once installed onto your computer, Mac Face will notify you when you have new messages, pokes, friend requests and event invitations from facebook. Requirements: Mac OS X...

After getting CallVantage,I felt that the missing piece was the ability to dial numbers directly from my Mac. Of course, you can use the CallVantage website, but that's not nearly as nice as dialing from Address Book (or, even better, Quicksilver)....