Some SEO tools I like to use
Posted by Claus Heinrich at November 25th, 2006
When developing websites, and especially optimizing them, its a good thing to have some usefull tools.
http://www.iwebtool.com/
These guys have a good selection of tools for webmasters. I can mention:
- Domain lookup
- Website speed test
- Reverse IP lookup
- Ping tests
- Link extractor
- Meta tag extractor
- Pagerank prediction
- Backlink checker
- Link popularity
And alot of other tools.
They also offer webmasters to incorporate theese tools on your own page, so you can give this service to others from your site. That is a sweet feature
http://www.linkvendor.com/seo-tools/domain-popularity.html
This is a great Domain Popularity checker from LinkVendor.
You can easily cross check searchengines for backlinks and strength on your site (or your competitors 
)
http://www.backlinkwatch.com/
Quite good backlink checker. I like the output, even though it takes some time to get through all links.