I like these communities: Python - it's a very large community. Given its size it's pretty diverse and also mature. It had some drama around an incident at Pyc

I like these communities: Python - it's a very large community. Given its size it's pretty diverse and also mature. It had some drama around an incident at Pycon a few years back and around the 2 -> 3 transition. Also Pycon is probably one of the most fun tech conferences. Erlang - it's an example of a great small community. A lot of knowledgeable people. It has been around for about the same time as C. A good mix of people who have been involved in the community for 30 years and newcomers. There is almost no drama, people might disagree but that's ok. Sometime someone said something that was taken offensively in the online discussion, and the person apologized and everyone moved on. No forks, no backstabbing, voting anyone out and so on. Elixir - probably my favorite example of wonderful community. And here all credit goes to Jose Valim and others on the team. They specifically focused on making the community warm, and welcoming for new people. That means not just codes of conduct but great documentations, good help and support online, tools to get started to write tests and so on. Also as a nice benefit they also in a way a part of the Erlang community as because there have been a lot of cool new fixes and features they've submitted for BEAM VM over the years. So depending on what you'd be interested in, I'd pick one of those. No doubt there are other great communities (I suspect Rust is one) I am just not as familiar with them so this is definitely not a exhaustive list or a ranking, just my personal experience.