> Anyone who's used Vim has seen evidence of Moolenaar's generosity. "Vim is Charityware," Moolenaar wrotes in its pioneering license. "You can use and copy it as much as you like, but you are encouraged to make a donation for needy children in Uganda." Moolenaar pioneered the concept of charityware decades ago, and also helped to popularize its adoption.

Pioneered one of the most iconic pieces of software in history, and yet did not make a single dime from it. That is truly something to look up to.