Features
Versatile
GNU social supports both single-user and community modes and can be used in an intranet environment or as part of the wider Free Network.
Accessible
Follows AnyBrowser and A11Y guidelines. It runs virtually anywhere you can run a common piece of web software, such as WordPress or Drupal. JavaScript is optional.
Customizable
True to the Unix-philosophy of small programs to do a small job, GNU social can be easily expanded and customized via its simple plugin API.
Privacy focused
GNU social is part of the GNU project, it's 100% free software, with no malicious features or spyware.