Is this guide trustable ?

http://www.techsupportalert.com/

I’m wondering if this guide is trustable. Seems well written and well kept, and I just might wanna try some of these programs (like CCleaner, which SNOWWHITE recommended, and Proxomitron, along with one of the registry cleaners).

Also, the 46 best freeware guide:

http://www.techsupportalert.com/best_46_free_utilities.htm

Looks pretty well written and examined also. I might just add this page to my favorites and install some of the programs in time …

Probably a lot of users here use these programs also ?

Perfectly safe. Reviewed it a long rime ago :):
http://forum.avast.com/index.php?topic=4312.msg109510#msg109510