PortableAppsA portable app is a computer program that you can carry around with you on a portable device and use on any Windows computer. When your USB flash drive, portable hard drive, iPod or other portable device is plugged in, you have access to your software and personal data just as you would on your own PC. And when you unplug the device, none of your personal data is left behind.

No Special Hardware. Use any USB flash drive, portable hard drive, iPod/MP3 player, etc.
No Additional Software.Just download the portable app, extract it and go.

It includes many freeware and open source applications like:

  • GIMP Portable - Photo and Image Editor
  • FileZilla Portable - the full-featured FTP client
  • Gaim Portable - chat with AOL, MSN and Yahoo users in an easy-to-use interface
  • Mozilla Firefox, Portable Edition - the award-winning web browser that’s safe and secure
  • Mozilla Thunderbird, Portable Edition - the handy email client
  • PuTTY Portable - lightweight telnet and SSH client
  • VLC Media Player Portable - An easy to use media player that plays most audio and video formats
  • OpenOffice.org Portable - word processor, spreadsheet, presentations with Microsoft compatibility
  • 7-Zip Portable - File archiver and compressor
  • ClamWin Portable - Antivirus on the go

Take a look at the complete application list here, and download it here.