The big thing here is my Traveling Salesman Problem Playground. In fact, it's so big that the description is now on a separate page.

Very recently, I needed to convert the tabs in some old source files from eight characters to four. I know that tools to do this are legion, but I've never found one that got it quite right appearance-wise, and at that particular time I couldn't find any at all. It was easier just to write my own version.

Someone on LambdaMOO asked for a script to do batch renaming of files, limiting length and converting spaces to underscores. Here is my response.