Which are some of the most common software's that you use on a regular basis?

I am into Interior Designing so I use Autocad-9,Photoshop, 3Ds Max, powerpoint, Microsooft Word , Explorer, Norton Antivirus........

I use Windows OS in my office desktop. Some of the most common softwares I use would be Microsoft Office, WinRar, avast anti virus software, Source Insight, Acrobat Reader. Oh, I almost forget one, Windows Live Messenger. I like using it to chat with my friends.

Except my Windows Os all the softwares i use are freeware.I just try the sharewares too sometimes if i really need them.Here is my list of softwares which i use daily. CCleaner,Super Antispyware,Comodo Security Suite,Revo Uninstaller,Orbit Download Manager,Adwanced Windows Care,Spybot Search n Destroy and finally open office.