What are some must-have software for a new desktop computer?

Question by BlueNWhiteFan10: What are some must-have software for a new desktop computer?
I want to know what software I should install first on my desktop. What are some must-have security programs, fun programs, & productive software. I prefer to just download free software such as Ad-Aware or Avast, but if anyone knows any software that every new PC needs, please let me know.

10 points to the person that can come up with the most useful list of programs!!

Best answer:

Answer by john_carlton04
I’m assuming you have a windows machine:

AVG Free (or Avast if you prefer)
ZoneAlarm Free
Ad-Aware
Spybot S & D
A Squared
AVG Antiroot kit
Startup CPL (from Mike Lin, excellent for controlling the crap that wants to start up)
CCleaner
Quintessential Player (an excellent free multimedia player)
Mozilla Thunderbird (a better & safer email client than Outlook Express or Outlook)
Mozilla Firefox
Opera (using both Firefox & Opera will keep that IE junk from running & exposing your PC to malware)

all these programs are free.

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