If you'd like a high-color icon and transparency, PuTTY Portable is designed to work with PuTTY Tray, too. Just replace putty.exe in the PuTTYPortable\App\putty directory with the PuTTY Tray executable.
Essays about design -- in German (Google translate to English is clunky, but gets the basic idea across). The essays about design in free fonts -- along the right side of the page -- are of particular interest.
Portable software that can be used from USB drives, cloud services, etc. The launcher and most apps are FLOSS, but a few freeware apps are included in the directory.
Portable Ubuntu Remix is an Ubuntu system running as a Windows application. This system is built with the Colinux Kernel, Xming X server and Pulseaudio server for Windows. Portable Ubuntu Remix is a useful tool for when you need to use Ubuntu on an machine that has Windows as operating system.
OpenOffice.org Portable is a complete office suite -- including a word processor, spreadsheet, presentation tool, drawing package and database -- packaged as a portable app, so you can take all your documents and everything you need to work with them wherever you go. OpenOffice.org Portable is a full-featured office suite that's compatible with Microsoft Office, Word Perfect, Lotus and other office applications. It's easy-to-use and feature-rich, performing nearly all of the functions you'd expect in an office suite, but at no cost.
"A free flashcard learning extension for OpenOffice Impress." "Based on state-of-the-art memorization and scheduling algorithms OpenCards will help you to learn any set of flashcards." Site includes a repository of existing flashcard libraries.