Want to know what tools people need

I have completely redesigned http://netbizcity.com and have a 18 website tools of which 9 are one I created and nine are from other websites.
I am working on my own version of a DNS checker which will be there soon.
When it’s added will ad a HTML validation check link as well.

What tools if any are something you think is important and do you think we covered the tools completely?

Are you just looking for feedback on the content on the tools section, or would you like a more general review? For example, are you also looking for opinions on the design/layout, and if so, for any section in particular or for the site as a whole?

Just the tools section but your welcome to give any criticism you think may be of value