Apple Thoughts: Troubleshooting Tools to Help Your Mac

"When it comes to troubleshooting the Macintosh, there are many utilities available for getting the job done. Some are cheap and some expensive but for most you will have to shell out a bit of cash for a license. However, there are also some very robust free options out there for troubleshooting software problems to managing hardware issues."

There are ten listed here, all of them freeware, that can help you maintain your Mac. To be honest, I've never used any of the ones on this list. However, if you are looking for some simple tools that have specific uses, this list might be just the thing for you.