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.
Manyverse - A social network off the grid
Hacker News - Hacker News is a social news website focusing on computer science and entrepreneurship. It is run by Paul Graham's investment fund and startup incubator, Y Combinator.
Public - Group chats.
4chan - 4chan is a simple image-based bulletin board where anyone can post comments and share images.
Wire - Private & Secure Messenger