Free Knowledge Culture Calendar/September 27

 Today in 1983 Richard Stallman announced the GNU Operating System as well as the GNU Project, where the explicit philosophy behind Free Software was developed and formulated. The announcement included a prototype of the GNU Manifesto. Feeling that value-devoid commercial enterprises were threatening the protected sphere of his productive hacker playground at university, motivated Stallman to engage in the obsessive powerhack that his work on GNU constitutes. It jumpstarted the modern Free Software ecosystem.