Advice from the gurus of Web 2.0 required

We're currently seeing a resurgence of collaboration software - I've seen Word and Excel clones for the web. But I'm not seeing anyone allowing for structured data - is there anyone out there selling access to a MySQL database with a pretty front end stuck on the front of it, so that people can share lists of things?

The data is currently being stored in Excel spreadsheets being emailed back and forth, and frankly it's (a) perfect for sticking in a database table, as it's just text stored in columns and (b)silly to be emailing it back and forth rather than sticking it on a server. But nobody seems to be selling pretty front ends for structured lists...

Anyone help me with this?