Ultimate Collection of SEO Tools?

Affiliate Marketing and Search Engine Optimization (SEO) are two things that will always go well together, so I’ve always made it a point to stay current on the latest SEO techniques and strategies.  I recently noticed a new post over at Search Engine Journal that really caught my attention.   They’ve called the post the Ultimate Collection of Internet SEO Tools, and I have to say that after reviewing the post, I’m going to have to agree.

Though it isn’t a complete SEO collection (as it only includes web-based tools), it is a great resource that I think people will love.   It is almost overwhelming just how many SEO tools there are out there!

What are your favorite web-based SEO tools?