For a while I had to use a Windows box for my development. Fortunately, I was able to make a good case for my company to switch me to a MacBook Pro.
One of the tools that took me a while to track down was a regex testing app. On Windows, I was a big fan of Regex Coach, which is a great app.
I was happy to find QuRegExmm. It’s not nearly as feature rich as Regex coach, but it seems to be good enough for me, since I really only want to test regular expressions, not really do anything else with it.