Eric does it again

Yours, Mine and Ours:
"I claim here that there are three categories of software:
MeWare: The developer creates software. The developer uses it. Nobody else does.
ThemWare: The developer creates software. Other people use it. The developer does not.
UsWare: The developer creates software. Other people use it. The developer uses it too.
For completeness, I suppose I should probably mention the obvious fourth category:
NobodyWare: The developer creates software. Nobody uses it. "

He then explains the pros/Cons of each. Excellent article