Over at eConsultant there is an awesome list of freeware utilities categorised by their function. You can find it at the appropriatly titled I want a Freeware Utility to …
There are hundreds of suggestions here in a plain easy to read layout. No ratings, no comments just a suprise everytime.
And when you have exhausted the Freeware there is the OpenSource section. Just keeps getting better doesn’t it?
Have fun.