Delphi (+ZeosLib) is nice for making a pretty Windows UI for your SQL database and as command-line middleware between BASIC and the SQL server. PostgreSQL is like playing Zork with databases. Python is effectively concise..
The server side of the same project has involved Debian with bind, dhcpd, lighttpd, iptables and ulogd - in addition to the aforementioned PostgreSQL and Python.
Busy. Very busy, but having fun too.