Facebook
Free
Facebook is the world's largest social network platform.
Friendica
Open Source
Friendica (Friendika or Mistpark) is open source software for a distributed social network. The focus is on effective privacy settings and easy installation …
Known
Freemium
Known is a publishing platform that allows its users to share their stories online.
Ello
Free
Ello is a community to discover, discuss, publish, share and promote the things you are passionate about.
Twister
Open Source
Twister is a peer-to-peer microblogging software.
ZeroMe
Open Source
ZeroMe is a social networking platform.
Diaspora
Open Source
Diaspora is a nonprofit, user-owned, distributed social network that is based upon the free Diaspora software.
Minds
Open Source
Minds is an open source social networking service.
Gnu Social
Open Source
GNU social is a continuation of the StatusNet project. It is social communication software for both public and private communications.
Libertree
Open Source
Libertree is a free, libre, open-source software that lets people create their own social network.
Soup.io
Free
Soup.io is an Austrian social networking and microblogging site.
Plurk
Free
Plurk is a free social networking and micro-blogging service.