Avatar Filename Tool
Icon Filename Tool
This tool converts a 32-bit number to a signed and a unsigned number. You can find out more about it here (in German).
Cache Directory Tool
This tool converts server UIDs to cache folder names and back. On Windows, you can find them in
%APPDATA%\TS3Client\chats. You can find out more about it here (in German). (Basically, this is just a Base64 encoder and decoder, but please don’t tell anyone!)