[tracker1]

I think if it were a web based solution your argument wouldn't be as sound.. MS server licensing isn't really so bad if you aren't also doing larger deployments of SQL and/or Exchange.

As it is, have you checked into porting your software to Mono (assuming it's .Net based), which may or may not work for what you have... if it's COM or ATL based, you're really SOL. That said, if you're mostly winforms, and don't have too many dependencies on third party gui controls, you have a shot there.

That would really lower your costs... and as you mention, a web based solution could make a lot more sense, if you can support that model, depending on your software.