I just saw your response to my question - amazing that you have developed something similiar already. :-)
Regarding your question: the company I work for has a specific section on the web site where tools which we used internally and/or simple solutions (or code snippets) which customers frequently ask for are published. The license of these offerings is very liberal as well, I think it qualifies as open source.
In your particular case, I'm fairly interested in the Spy++-like application you talked about since I was looking for (and/or trying to develop) something like that myself.
I'm aiming for something which doesn't require any infrastructure in the target application, but so far I'd be happy to play with anything which works, even if it requires modifications to the applications. I'm just not familiar enough with the PowerBuilder API yet to make a judgement on whether this is possible without modifiying the target application.
As I mentioned, I already developed similiar Spy-like applications for ordinary Windows applications as well as managed code applications (which require interaction with the VM to query the state of the object tree), so my hope is that I'll be able to find a solution which does not require any target infrastructure.
Do you have the source code up somewhere already? It doesn't need to be compileable, I'd just be happy to look how you did it in principle so that I can (hopefully) derive something from it which solves my particular problem. In case you didn't upload the source code yet, maybe you can provide some email address which I can use to contact you privately? I tried looking for something on your profile, but so far - no luck. :-)
