Clean up computer?

Hello, I have been using my powerbook for quite some time now, and since the time of purchase, I've put quite a few things on it. I am wondering however, if there is any software, or something I can do to help clean it up a little bit, and keep it running fast.

I know windows had some disk defragmentor program that was supposed to do that.

Thanks

I use a program called Cocktail (shareware) and Macaroni (shareware), there is also Onyx (free), PantherCacheCleaner and Xupport.

They all do pretty much the same things with different graphical frontends and slight differences here and there but all pretty good. They mostly automate the process of cleaning caches, repairing permissions etc.

All can be found at www.macupdate.com or www.versiontracker.com

OS X uses a journaling filesystem (HFS+, I think) and is near impervious to fragmentation.

If you know what you're doing - use OnyX. However, if you're new to the whole Mac thing - do yourself a favour and buy a license for Cocktail.

There's also Tinkertool which is free, does pretty much the same things as Cocktail. And it offers the shareware version Tinkertool System too, which comes bundled with a couple more options.

thanks

Also you could try : http://www.versiontracker.com/dyn/moreinfo/macosx/10491