E mule
eMule is one of the biggest and most reliable peer-to-peer file sharing clients around the world thanks to its open source support and based on edonkey2000 client.
eMule has Multilanguage support with ability to connect to multiple servers and intelligent file corruption detection system to help you in getting genuine files. eMule is free from spyware, adware and its completely free.
eMule is also available in portable form to run from your USB derive
Features
- Making eMules file verifying algorithm future proof by combining the ed2k hash with the AICH hash to identify and verify downloaded parts and files. This guarantuees that existing and newly found MD4 weaknesses will not affect eMules ability to deliver uncorrupted files in the future.
- Several GUI improvements, like supporting new taskbar features of Windows7, easier access to download commands by adding a new toolbar, an improved shared files dialog and a brand new Kad graph to look and wonder at
- Better usability in small LANs by adjusting Kad to such an environment and supporting highspeed uploads
- And as always fixing bugs and adding other small changes.
Other Free Windows 7 Software
Screenshots

Requirements:
- Pentium II CPU 350 MHz or higher
- 256 MB Ram , better 512 MB or more.