"Cooperative" is certainly a good term, as in fact is "community". I might point out, though, that limiting the scope to "software" presents a difficulty of its own. After all, even just within the scope of information technology (which is far from being the only technology which shapes our lives), if the hardware is locked down, it doesn't matter what software freedoms you may have. If the hardware is unrepairable, you have to keep going back for whatever "they" want you to have now.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko