Oh, what a coincidence! I thought someone posted my project here :) I just made a toolbox last weekend during the rails rumble. It's http://hackertoolbox.com (right now it's being judged by judges and other teams so I have to redirect it to railsrumble site). The seed data is from https://news.ycombinator.com/item?id=5235137 so all the tools are suggested by HN hackers.

I will add any tools posted here. And of course, you're welcome to post your favorite tools to hackertoolbox.com or/and review them.

Lastly, thanks for asking the question :)