This is a good one!
A backlink checker that checks up to 3 url´s at once.
Simply fill in your domain names and press submit.
You will now find out who links to you on Google, Yahoo, All the web, Altavista and MSN.

Try it out here: Backlink checker

A smart thing to do is to bookmark your result so you don´t have to write in the domains again next time you want to check your backlinks stats.

This tool comes from: http://www.searchengineoptimising.com/

If you find other good backlink checkers please post them here.

I found this tool a while ago, It predicts pagerank for your domains simply write down the adress for all your domains and it will make a prediction for you.

The results are not guaranted ofcourse but I learned that taking the number you get -1 you can be pretty sure that it is at least what pr you should get.

Check it out here: Pagerank Prediction

This is one of the best sitemap generators i have found: Sitemap generator
Easy to use and and very simple design.

This is a great tool for checking title, keywords and description: Meta tag analyzer

It also shows number of Url´s etc.