Skype is a little piece of software that allows you to make calls from your computer. Talk for as long as you like without worrying about the cost or the distance.
Free Skype-to-Skype calls
Make video calls
Send cheap text messages
Easy conference calling
Free to download
Skype is a little piece of software that lets you make free calls to anyone else on Skype, anywhere in the world. And even though the calls are free, they are really excellent quality. If you and your friends, family or business contacts are using webcams, you can also make free video calls. You can even call landlines and mobile phones at really cheap per minute rates (and theres no setup or subscription fee).

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 its 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 cant take the calls.
Forward your Skype calls to your mobile or landline.