The whole world can talk for free with this p2p telephony software.

What’s new in Skype 5.0 for Mac:

Group video calling
There's so much you can do together over group video. Have regular catch-ups with loved ones and work together via video conference to cut down on travel. Find out more

Easier than ever to use
Now all the action is in one main window, plus manage calls from a mini control bar.

Effortless search
Find contacts and conversations easily without having to scroll through lists. Your Mac Address Book contacts are automatically integrated, too

Features:

Free to download and use

* Make free calls to anyone else on Skype, anywhere in the world.
* Chat with one person or have a group chat with up to 100 people at a time.
* Conference call with up to four people for free.
* Easily send files and photos to each other.

Useful things that cost a little

* Calling phones is not free but it’s pretty cheap. No setup or monthly fees.
* Get a SkypeIn number, so that people using ordinary phones can call you directly on Skype.
* Let Skype Voicemail answer for you when you can’t take the calls.
* Forward your Skype calls to your mobile or landline.

System requirements

* Mac computer with G4 800 Mhz processor or faster
* Mac OS X v10.3.9 Panther or newer
* 512 MB RAM
* 40 MB free disk space on your hard drive
* Microphone
* Webcam: Suggested webcams include Apple iSight, Philips SPC900NC, or Logitech QuickCam Pro 4000. Drivers for the Philips and Logitech webcams can be downloaded from http://webcam-osx.sourceforge.net/.
* Internet connection (broadband is best, GPRS is not supported for voice calls, and results may vary on a satellite connection).

What's New:

New user interface:
The overhauled experience keeps you in contact with all people close to you, whether in business or privately. Skype 5.0 for Mac unifies all your phone, SMS, video, and chat communication, one-to-one or with multiple people.

Group Video Calling:
Group video calling enabled a groups of up to 10 participants to meet each other over video. It's a good way for separated families to talk with each other or to host a business meetings from various offices. Group video calling requires a modern computer with a fast internet connection. For best quality (VGA quality) 10-way group video call all the participants will need about 5 megabits symmetrical bandwidth and a computer powered by Intel core i5 or i7 processor. You can make a call with slightly lower quality with less powerful machines. The system requirements are lower for fewer participants.

Improved experience during network-compromised calls:
We have improved your experience on calls when you or the other side of the call is experiencing network glitches. In these cases Skype will try to either find a better relays for the call, or, if not possible, to re-connect the call for you automatically.

Offline Instant Messaging:
Now you are able to send and receive messages from your buddies when they're offline. The message will be delivered straight after the receiving party logs into Skype, no matter if the sender is online or not. This feature works only for contacts where both sides are on version which supports Offline IM, e.g. either on Mac or Windows 5.0 releases.

New features:
- User Interface refresh
- 10-way group video calling
- New contact and chat content search
- Offline instant messaging support
- Improved experience during network-compromised calls
- Automatically recover dropped calls.
- Join an ongoing conference call
- During a call, access call controls when in another application
- View online contact using the contact monitor
- Add additional phone numbers to your contacts
- Browse your contacts using the Avatar View
- Improved support for VoiceOver and more keyboard shortcuts
- Easily edit or delete your own message using the new chat style
- See built-in notifications for incoming messages and when contacts have gone online