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.
Chttr.co - Chttr.co is a social network with 1. openness — everything is public 2. effortless discussions 3.
pump.io - A stream server that does most of what people really want from a social network.
Nitter - Nitter is a free and open-source front-end mirror of Twitter, which allows you to consult Twitter...
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
FreezeCrowd - FreezeCrowd is a social network that connects people in group photos.