Michael Tiemann
Person
Selling support for free software. Tiemann wrote the first native-code C++ compiler, g++, for the GNU project, and in 1989 co-founded Cygnus Support with John Gilmore and David Henkel-Wallace to sell maintenance, porting and support for free tools such as GCC and GDB to companies building embedded systems. It proved there was money in open-source developer tools without owning them, and Red Hat bought Cygnus in 1999.
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