I looked for this about 2 years ago, and while I don't remember the specifics, there were no available products, free or for pay, that met the requirements. We ended up writing one ourselves (the only time I wrote ASP.NET). We had some very specific requirements (just like everyone else :rolleyes: ), and it has been 2 years, so ymmv. We were on a non-connected network, so the on-line (hosted by the developer) options would not work out for us. Depending on the group, you might be able to interest them in folding changes you make back into their product. That way you get what you need, and don't have to own it, and they get additional functionality without having to build it.
Opacity, the new Transparency.