EMSISOFT Anti-Malware : http://www.emsisoft.com/en/software/antimalware/
Just download the FREE version and manually run the update and system scan periodicially. It is VERY powerful and detects stuff that the regular anti-virus programs sometimes miss...even the the best ones...the only thing with the free version is that you cannot have it update itself or scan automatically, you have to do those things manually, but if your puter is infected this is one of the best tools out there to clean it up with...
Avast Free edition anti-virus ( use it myself, very happy with it in general ) : http://www.avast.com/en-ca/free-antivirus-download
Ashampoo Burning Studio 6 ( free ) , good free alternative to Nero, lots of options: http://download.cnet.com/Ashampoo-Burni ... 76287.html
Nitro PDF Reader : http://www.nitroreader.com/
Great alternative to Adobe, compact, stable, fast, lots of options and FREE!
GPU-Z is interesting if you want to find out exact details about your video card or onboard gpu:http://www.techpowerup.com/downloads/SysInfo/GPU-Z/
Driver Sweeper is a fast tool to remove driver leftovers from your system. It's very important to remove your drivers on a proper way, because driver leftovers can cause problems like stability and startup problems ( not to mention slow game performance or other 3D problems ). You can use it if you want to update/remove drivers from your system: ( Sometimes simply uninstalling your old video driver is not enough, ESPECIALLY if you switch from ATi to nVidia video card, or vice versa - then you REALLY need to completely clean all remnants of the old driver out, and Driver Sweeper is one of the best ways to do this easily and quickly )
Get latest Driver Sweeper here: http://phyxion.net/Downloads/
RealTemp is similar to "Speedfan" , a good cpu core temp monitoring utility: http://www.techpowerup.com/realtemp/
I use all of the above with Windows 7 64-bit , all very stable and run perfect with this OS. ( and will run fine on 32 bit versions and older Windows OS as well of course ).
Epub Viewer ( to read ebooks etc. published in ePub format ) , here is the FireFox plugin for it: https://addons.mozilla.org/en-US/firefox/addon/45281/
Runs right in the FF browser, no need to launch separate application to view ePub book ...
More ePub readers are reviewed here: http://www.jedisaber.com/ebooks/readers.asp