Portable Free Apps : Use it And Enjoy it

Skype created a little piece of software that makes communicating with people around the world easy and fun. With Skype you can say hello or share a laugh with anyone, anywhere. And if both of you are on Skype, it’s free.

Features:
- Free unlimited worldwide phone calls to anyone else on Skype, anywhere in the world
- Skype video (webcam), see who you are talking to with free video calls
- Chat with up to 100 people in group chats
- Conference call with up to four people for free
- Call ordinary phones with SkypeOut
- Superior sound quality – better than your regular phone
- Your calls are encrypted “end-to-end” for superior privacy
- Friends list shows you when your Skype friends are online and ready to talk or chat
- Works with all firewall, NAT and routers – nothing to configure!
- Super-simple and easy to use

µTorrent is a most popular BitTorrent client. And it features lightweight, feature rich, high performance and so on.
I like it.

eMule is one of the biggest and most reliable peer-to-peer file sharing clients around the world. Thanks to it’s open source policy many developers are able to contribute to the project, making the network more efficient with each release.