CommunecterPlatform, Software
A local and civic societal network developed using open source software whose goal is to connect the various actors in a town, including institutions, citizens, community groups and local businesses. This platform aims to boost local democracy and solidarity projects in France by connecting actors through various social network tools, such as the creation of groups, dedicated forums, news feeds and customised calendars. It also includes cartographic visualizations which are frequently absent from other social networking platforms.
DiasporaSoftware
distributed social network based on software of the same name
Un
Untitled CardPlatform
An ethical and decentralized social network
MastodonSoftware
Mastodon is a free, open-source social network. A decentralized alternative to commercial platforms, it avoids the risks of a single company monopolizing your communication. Pick a server that you trust — whichever you choose, you can interact with everyone else. Anyone can run their own Mastodon instance and participate in the social network seamlessly. Fluffy elephant friend
TwitterPlatform
Twitter is an online news and social networking service where users post and interact with messages, "tweets," restricted to 140 characters.