Here are fifteen free portable applications that should be on your flash drive.

Web and Internet

Operator – Opera is not everyone’s favorite browser, but it works great as a portable application. As well as being a browser, it features anonymous browsing built in to keep you safe. We also recommend Portable Firefox that is if you are on a trusted network.

Pidgin – Pidgin lets you use one application for many different chat services, it’s the best option for a multi-chat application. Be sure to check out the encryption plugin for security.

Filezilla – Best FTP program PERIOD.

Peer-to-Peer

μTorrent – Small and very efficient torrent program that is under one megabyte in size.

Frostwire – Efficient download program that uses the gnutella network.

Cleanup and Support

CCleaner – CCleaner deletes all the personal data left on your computer.

Revo Uninstaller - Revo is much better than windows add/remove programs.

Treesize Free – Tells you where you are using the most hard drive space. Makes drive cleanup an easy task.

Teamviewer - TeamViewer makes it easy to make connections to any PC around the world.

Multimedia

CDBurner XP – Easy CD and Dvd burning program. That knocks Nero to the ground.

VDownloader – This free program downloads YouTube videos. VDownloader is capable of saving in a number of video formats, or if you want just the audio it saves as MP3.

Irfanview - For image viewing and basic edits like crop, rotate, resize, rely on Irfanview.

VLC - Videolan is simply the best portable media player because it supports so numerous formats and does not require you to download codecs. Here’s another reason why you need VLC player, it has been download over 100 million times.

Document Editing

Notepad++ - Notepads freeware BIG brother features macro recording, syntax highlighting, tabbed interface and much more.

Foxit PDF Reader – Adobe Acrobats worst enemy. Foxit PDF reader is super fast, never crashes and of course is free.

What other portable apps do you recommend?