Computers

Computer Domain Names:
Dotster - Go Daddy - 2 different places to buy your domain names (.com, .net etc)
SnapNames - buy domain names that are about to expire

Web Page Stuff:
What people search for - tools to find popular keywords.
Alexa -  info on the popularity of web sites.
Yahoo - Keyword info and lookup.
IP lookup - IP Address Lookup.
I Web Tool - various domain / website tools.
WhoISHosting - tells you the host of any website.
Info - on your computer.
Way Back Machine - see what webpages looked like years ago.
Get into Paid Websites - for free.
Pidgin - Instant Messaging client that allows you to use all of your IM accounts at once.
Web Form Factory - if you add a form to your webpage, this application will then email the info to you.
Says-It.com - create custom signs.

Freeware/Shareware:
Download.com & Shareware.com
E Consultant - links to tons of free computer stuff.

Various Computer Stuff:
Zamzar - convert any type of file to any other type...for free!
Dogpile Search - see what people are searching for right now.
ModifyVideo - convert on line video's for use on your PSP, IPod or IPhone.