With all these large new USB sticks it’s hard to fill them with data. My 2GB USB drive has more than 1GB of free space :S

Some of the free space I use for portable apps, to have my favorite tools and application always with me.

A couple of tools I have on my stick are: VideoLan audio/videoplayer, KeePass password safe (tnx Tazz), KDiff3 (for file and folder differences), ClamAV virusscanner, Putty for SSh and telnet and Sumatra for viewing PDF’s.
All these programs function without installing and leaving no trace on the computer you run it on.