Jaiku
Create your own microblog and connect with your friends. Post from the Web, by SMS, or from desktop clients. Add comments, use icons, link Webfeeds. Take it with you on your phone.
Friendica
Friendica is a distributed social network application. Which allow users to connect with others via their own Friendica server ...
Twitter is an online social networking service that enables users to send and read short 280-character messages called "tweets ...
Rememble
Rememble is a 'washing line' for your digital bits and pieces. Thread together texts, photos, videos, sounds, scribbles, scans ...
Plerb
Plerb is a social microblogging and chat community.