Free Portable Apps
All versions of the PortableApps Suite include the integrated PortableApps Menu (pictured at right) and the PortableApps Backup utility along with a set of custom icons, an autoplay configuration, folders and a quick start shortcut. In addition, the packages include:
PortableApps Suite (Standard Edition): ClamWin Portable (antivirus), Mozilla Firefox - Portable Edition (web browser), Gaim Portable (instant messaging), OpenOffice.org Portable (office suite), Sudoku Portable (puzzle game), Mozilla Sunbird - Portable Edition (calendar/task manager) and Mozilla Thunderbird - Portable Edition (email client) and runs comfortably from a 512MB drive.
PortableApps Suite (Lite Edition): Uses AbiWord Portable (word processor) instead of OpenOffice.org Portable and runs comfortably from a 256MB drive.
PortableApps Suite (Base Edition): If you'd like to pick and choose exactly which apps to include, you can try Portable Apps Suite (Base Edition). This is a stripped down package with just the PortableApps Menu, PortableApps Backup utility and custom folders, icons and autorun. It's less than 1MB installed, so it's a great option for smaller drives.