>>I used Crystal before. But I need to let users create/save/run the reports. As I understand you can't do that with Crystal. I hoped I can have some tool on the server side with a web interface available for the users.
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>I researched this about six months ago. I didn't find anything that will let the user create a report through the browser. There are lots of tools that will accept a query and run it.

I think Business Objects has functionality to do this.