What is the most useful software do you have in your pc?

what is usually you use in your pc? the best software in your pc? like antivirus, html, firewall etc....

What is the most useful software do you have in your pc?internet

Sony Vegas allows me to encode my music collection to 5.1 channel audio for clarity and surround sound.

John

A+ Certified

What is the most useful software do you have in your pc?network

CCleaner.

It is so small, yet so useful! It keeps my computer clean and has been the major force behind speeding it up. I love it!
if this is an answer for a paper for school, I would say the Operating System... hehe. However, fine line as to if you consider that actual software, which it is..next would be a web browser, but that is included with your OS.

However, if you are just looking for good software, I would say hands down, Adobe Photoshop. Everyone should have a copy.

As far as other options, from a Windows perspective, that would be a toss up between Microsft Word, and Norton Antivirus Corporate Edition, for Mac, (even though it isn't really software) I would say a .mac membership.

I am a mac user, so don't worry about antivirus, and I use a router, so I am utilizing NAT, so no need for a firewall.
The calculator.. what will we do without them? ;)
"learn good english"..i think you need it too..
dreamweaver is the most useful software i have. the definition of "useful software" really depends on what you like to do.
Windows XP!
adobe photoshop http://easyphotography.tk
Firefox Browser