[sysrpl]

Here are a few more: fl studio, convert x to dvd, homesite, spybot search and destroy, resource hacker, innosetup, and originally mysql workbench

[mhd]

Siege of Avalon was a pretty great RPG written in Delphi, now open-sourced[1] (no work done on it since ages). I remember liking that it was somewhat "mundane", i.e. upgrading your armor didn't mean that you start out with knightly full plate and it goes all out fantastic after that.

[1]: http://soaos.sourceforge.net/

[chadcmulligan]

I think TOAD was written in Delphi to

[ship_it]

Wasn't FL Studio written in C++?