I saw the CircuitLab and it is awesome. Does anyone know what it was coded in? I write .NET apps, but I like the way these work in the browser. Is it all JQuery or some other libraries? I don't know how to contact the developer(s) so I figured I would ask in the open :)

I wanted to know because I have ideas for free tools to support different stages of project development too. Thanks.

jallen001 -

Mike Robbins and Humberto Evans were the developers of Circuit Lab. Same guys who started Nerdkits. In my experience when you e-mail them (see the "Members" link for address) they are quick to respond.