Given that Sql Server Reporting Services is designed to be open and extendable, and that the bundled Report Manager isn't that great, are there any alternative open-source SSRS Front-ends out there?
By 'front-ends' I guess I mean web apps that can display the available reports on the reports server, gather the required parameters (hopefully in a more flexible way than Report Manager) and then run the reports. I'm imagining things that are built using the Asp.Net ReportViewer component, but have better parameter gathering.
I've found one on CodePlex: reportviewer.codeplex.com (edit: actually, this looks like a winforms solution, but its the closest I've found) ... but I'm wondering if there are others out there, cos this seems like an area in which lots of people have had to 'roll their own'.