Not sure about web & mobile, but on the desktop Armadillo was a big player: http://www.siliconrealms.com/ Armadillo would handle code generation / management, while e-commerce services with Armadillo support would handle the other half.
The downside of any common license system is that it becomes a big target for crackers, since cracking the one system unlocks lots of software. Some developers are happy to deal with that, others not.
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Not sure about web & mobile, but on the desktop Armadillo was a big player: http://www.siliconrealms.com/ Armadillo would handle code generation / management, while e-commerce services with Armadillo support would handle the other half.
The downside of any common license system is that it becomes a big target for crackers, since cracking the one system unlocks lots of software. Some developers are happy to deal with that, others not.
If you're rolling your own, make sure you've checked out Brandon Staggs' article on Partial Key Verification (PKV): http://www.brandonstaggs.com/2007/07/26/implementing-a-parti...