This page contains links to files, repos, and other stuff I own (or in a few cases, have adopted). If there’s something I’ve done you want to see here, add a comment.
Bj Rollison’s Testing Mentor blog used to host some great tools he wrote for testing. One that I still use is called Babel, and is useful for generating strings throughout the Unicode range. I am unofficially hosting a binary copy of the tool here.