Virtual VideoPhone 1.1 (by yak.com)
Download the Virtual VideoPhone, install and start calling.

Virtual VideoPhone 1.1 (by yak.com)
Download the Virtual VideoPhone, install and start calling.

SightSpeed 4.6 (by SightSpeed Inc.)
SightSpeed is an advanced Audio & Video calling software

Here are some key features of "SightSpeed":
· 1-to-1 Video Calling
· Audio Calling
· Multi-Party Video Calling
· Video Mail
· Video Answering Service
· My Sightspeed.

Free Conferencing Now 1.0 (by Tego Networks, LLC)
Free Conferencing Now widget instantly provides a permanent telephone number and passcode to have free, dial-in conference calls anytime.

nikotalk 1.1.1 (by nikotel, Inc.)
Just type in your phone number (including country code) and the number you wish to call and the Nikotel network will let your phone ring.

X-Pro-Vonage 2.0 (by Vonage, Inc)
X-Pro-Vonage is a VoIP software solution that offers the freedom and convenience of making and receiving calls from your Mac using the Vonage service.

Ovolab Phlink 3.1 (by Ovolab)
Ovolab Phlink, combined with the Ovolab Telephone Adapter, can answer telephone calls and identify the caller using Caller ID and Apple's Address Book.

JackenIAX 1.0beta v213 (by Jack Zimmermann)
Want to be able to make phone calls around the world from anywhere? Answer your home phone from a hotel in Tokyo? Well, you can with JackenIAX and an Asterisk server or using an VoIP provider that supports the IAX2 protocol.

iTwist n' Go 1.2.3 (by ideasguy)
iTwist n' Go is an application for iChat AV featuring 'Automatic Answering', answer/hang-up video/audio calls with an External iSight Camera, direct to fullscreen, screensaver cancellation on call-in (video, audio and instant messages, showing you who’s calling), IM panels are shown directly onscree

Empower Pro Phone 2.2.3 (by Empower Pro)
Empower Pro Phone enables you to have real-time voice communication so you can talk to friends, family and co-workers over the Internet directly from your Macintosh to their Macintosh.

Gizmo 2.0.0.161 (by SIPphone)
Gizmo is an Internet telephony application, designed to look like the popular iChat instant messaging application.

Skype 2.0.0.6 (by Skype Technologies S.A.)
Skype is the next phenomenon from the people who brought you KaZaA.

Ovolab Phlink 3.1 (by Ovolab)
Ovolab Phlink, combined with the Ovolab Telephone Adapter, can answer telephone calls and identify the caller using Caller ID and Apple's Address Book.

BluePhoneElite 1.1 (by Reel Intelligence)
BluePhoneElite extends the calling features of your cell phone to OS X with a simple yet powerful interface.

Send SMS 1.7 (by Alco Blom Software)
How do you send an SMS? Are you using the T9 input method? Are you also wondering why you are using these small keys with numbers on it to enter text while you have your Mac keyboard in front of you?
Then the Send SMS widget is for you.

Hold On 0.6 (by Wooden Brain Concepts)
HoldOn lets you use your build-in modem as a speaker phone to listen to the line while on Hold.