I got frustrated by the dated UI and the limited features in the birt(www.eclipse.org/birt) webviewer. So I built Enterprise Reporting Server as a replacement, and released it under the Affero GPL license. Some features:

- User accounts and role-based access controls - Report scheduling - Fine grained permissions on reports

Fork it on github https://www.github.com/stephanfeb/ers

Download a .war http://www.computonium.com