Tumblr - A feature rich and free blog hosting platform offering professional and fully customizable templates, bookmarklets, photos, mobile apps, and social network integration.
ZeroMe - Social network for the distributed P2P network ZeroNet.
Pillowfort - A new multi-media blogging platform
GNU social - GNU social is communication software for both public and private communications.
Medium - Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.
Identi.ca - Social & Communications