PostgreSQL 8 - windows install pack.

http://pgfoundry.org/projects/pginstaller

I just installed the windows installer for pgsql8 and it comes with
- the RDBMS server (windows service)
- RDBMS documentation
- ODBC driver
- JDBC driver
- .NET data provider (npgsql.dll)
- PGAdminIII (GUI admin/devel client tool)
- PGAdmin documentation (CHM file including RDBMS help)

The whole lot comes down in 12MB!
Pretty amazing considdering similar functionality from other RDBMSs are hundreds of MB and take hours to setup in some cases.
It literally took m 5mins to download/install/configure/test the whole shebang. I guess the reason why I'm impressed with that is I know the end product is at least as valuable as all the other so-called "heavy-weights" like Oracle and MS SQL.

The .NET stuff looks good. I've had some experience developing to MS SQL using C# and it's nice to know that I can use pg natively. Honestly, the whole package is so small you could easily bundle it with a small desktop app no problems at all. It's not like you have to worry about licencing.

Currently I'm using some nice GUI tools to work with pg which speeds up productivity a LOT. http://www.ems-hitech.com/pgmanager/screenshots.phtml