A programming language that I wrote a couple of years ago, and continues to be used at Tomahawk. You might say that the business was built on the back of SteelArrow
I went open source with it after many failed attempts at marketing the software. Instead I decided to focus on the applications that ended up getting developed with SteelArrow as the data engine.
We sell a product now called ParkAdmin which is currently used by about 8 or 9 colleges and universities in North America.
The SourceForge address for SteelArrow is;
http://sourceforge.net/projects/steelarrow