What SEO and Web tools does everyone use?

Hey guys,

So I built and manage a few sites and am wondering what tools everyone uses in order to build, maintain and market their sites.

I used Yahoo to build my sites(sitebuilder). I also use other programs like DW(just to check for errors and removal).

Websites:
www.webmasterworld.com (for everything)
www.linkvendor.com (for SEO)
www.sxc.hu (for photos)
I use Google Analytics for tracking.
Yahoo Site Explorer

Programs:
Sitebuilder
DreamWeaver
Excite Link Evaluator(looking for a replacement)

I'm sure there's some I'm missing and Ill post them once I use them. So Any other good tools out there?

For keyword research the best tool for me is Google Adwords keyword tool:
https://adwords.google.com/select/KeywordToolExternal

I also use http://www.digitalpoint.com/tools/suggestion/ which gives results from Wordtracker and Overture.

For spying on competitors I use www.domaintools.com , www.compete.com , www.spyfu.com

To build my sites I use Wordpress because it's highly customizable and search engines loves it.