I helped develop hackatime (https://github.com/hackclub/hackatime/) this fall for our latest project high seas, and it's been a truly amazing experience. I'm 16, and I never thought I would be maintaining and operating a program with over 17 thousand users and 25 million+ rows! It's been a wild ride that I don't think I would have gotten without hackclub :) Also just in general the community is amazingly supportive; I joined a little over a year ago and I've made a ton of really amazing friends that I hope I can keep for the rest of my life ^_^