RF sketch (RF modeling on-line platform)
this is one idea i been come up last days, i am an electronics engineer from mexico, and i become to the conclusion that there's nothing like a on-line RF modeling platform for antenna modeling, transmission lines, filters , arresters, couplers modeling and so on.
It could be a expert system, may run in a cluster, a farm, but for a start could be in PHP version 5 and run in a remote server.