Server Fault - Server Fault is a Q&A site for system administrators and IT professionals that's free.
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
Sapien - Sapien is a Web3 social network that gives users control of their data, rewards content creators, and fights fake news.
Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.
Poal.co - A free speech based link and comment aggregation platform.
MetaFilter - Community weblog