The ASP.NET Enterprise Manager is a pretty funky web-based, Open Source version of Enterprise Manager. Think of it as a very good cover version of the original ;-)
Two immediate benefits are obvious:
- MSDE users have a proper management tool at last
- No need to install SQL tools locally or use a Remote Desktop Connection just to administrate SQL Server
There's still a reasonable TO-DO list for the tool, but it's pretty usable as-is.