The case concerned a dispute about whether a California man could resell Autodesk software on eBay.

CNN: SHARE THIS

Also in Texas, id Software founder John Carmack--the man who brought the world the Doom gaming franchise--has taught himself rocket science and is pushing his own space venture, Armadillo Aerospace.

FORBES: Billionaires In Space

Software is scarcely more tangible than a man's thoughts.

FORBES: Digital Rules

Microgaming Software Systems, based in the Isle of Man, created the world's first online casino 20 years ago.

BBC: Nevada opens doors on first US-based online casino

At least he's the man responsible for the company providing the software behind Nintendo TVii (the guy behind the guy, if you will).

ENGADGET: Here's the company behind Nintendo TVii (spoilers: it's not Nintendo)

For those following the tale of McAfee, the man who amassed a fortune by running and then selling an antivirus software company named after him, this new twist should come as no surprise.

CNN: STORY HIGHLIGHTS

John Romero, co-founder of iD Software, is one of the best-known developers in the business, the man behind blockbuster first-person shooter games like Doom and Quake.

FORBES: Game Design Challenge 2011: Bigger Than Jesus

The former lawyer and advance man for Bill Clinton's first presidential campaign is applying those skills as a software entrepreneur.

FORBES: Magazine Article

Of course, the richest man in the world certainly knows a thing or two about making money--in the software business.

FORBES: Magazine Article