I do realise this, I just added eclipse as an afterthought, as it's arguably as irrelevant as jQuery. The main focus was on the webserver/database, I just didn't expect someone to single the IDE out.
Database isn't relevant, there are .Net drivers for pretty much every popular database. Loads of .Net devs use MySql and Postgres, and using document databases like MongoDB is also an option now
Webserver might be true. But database is not. SQL Server probably has 75% share from what I've seen. But 25% is a pretty large market, and you see everything under the sun there. You'll see Oracle, DB2, MySql, Teradata, and other stuff that I'd never heard of.