Originally posted by lilfoo
Closed is normal license agreement.
1.You can't freely distribute.
2. You cannot modify
The linux kernel and lots of utilities are released uder the GNU license. Which says
1. You can freely use this code.
2. You must make any derivative works freely availible.
So businesses are a little standoffish about using code they can't sell (this is called GNU taint) However many many many businesses make software to run ontop of linux and they sell it. Because they wrote it for linux is inconsequential. Basicly as long as they didn't use any GNU code they can sell it. Most of these companies are in the server or large corp enterprise markets. But a couple of quick ones are vmware, wine, sourcefire, Checkpoint, ximian
I personally like the BSD license which says.
1. Do wtf you want with this code just keep this license with it.
By the way most of the implementations of TCP/IP are based on the BSD source because it's so open. You could take this free product and make something from it and then patent it and sell it. I actually worked for a company that did. Thank you regents of california universities!
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