Any good tools for switching?

Are there any good tools for listing your current programs, maybe exporting settings etc. Listing hidden settings and save locations would be great too.

I'm about 90% ready to switch to Linux full time, and I want to make sure that I've got everything. I've got a horrible feeling that I'm missing something, but I can't think what it might be.

EDIT: Ironically, I forgot to mention my ADHD / memory issues. I could do with a tool like this because I forget about anything that I'm not currently using, or actively thinking about using soon >.<