I like to use lots of different tools while I’m working. Finding a good tool to help you do a task can reduce a mundane task like renaming 100 files from 30 mind numbing minutes to 5 minutes of feeling smug. Brilliant.
When picking a tool, as well as just generally searching around myself, I usually check the free country as it usually has a good list of programs to try. I usually find it quicker to find a good tool using this site, than searching through other free/shareware directories.