Ello!

Diaspora is a federated social networking service, designed to be a more privacy-aware alternative to Facebook . Share what you want, with whom you want.

Mastodon is a decentralized microblogging engine, an alternative implementation of the Gnu Social project.

Friendica is a distributed social network application which runs on commodity hosting platforms - PHP/MySQL/Apache. (If you can install Drupal or Wordpress you can probably install Friendica)

GNU social is a continuation of the StatusNet project. It is social communication software for both public and private communications. It is widely supported and has a large userbase. It is already used by the Free Software Foundation, and Richard Stallman himself.

Social networking in a box. Build a social network for your company, school, sports team or niche community all based on the power and flexibility of WordPress. Install BuddyPress directly through your WordPress dashboard plugins page, or download it manually from the WordPress.org plugins repository.

The Creative Professional Platform. The world's leading platform for creative professionals to gain exposure and manage their careers.

MUSTEUS - the new way to communicate in internet with your follower

Whaller lets you create private social networks and bring them to life.

Stay Connected. Be with Friends in Your World. Talk to Anyone in the World.