Federated and open-source social network with no ads, 500-character limit, custom emojis, and content warnings, emphasizing privacy and personal interaction.
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.
Friendica is a distributed social network application. Which allow users to connect with others via their own Friendica server, but may also fully integrate contacts from other platforms including Twitter, diaspora*, Pump.io and StatusNet into their 'newsfeed'.
Pleroma is a free, federated social networking server built on open protocols. It is compatible with GNU Social, Mastodon, and many other ActivityPub and OStatus implementations.
Hubzilla is a powerful platform for creating interconnected based websites featuring a decentralised identity, communications, and permissions framework built using common webserver technology. Hubzilla is very suitable for communities (of any size).
A secure collaboration app with end-to-end encryption and interoperability across web, desktop, and mobile. Includes chat, voice, and video calls.
Our philosophy is that your data are yours and you must always be in control. Movim achieves this through a complete decentralisation of users' data and accounts.
Libertree is free, libre, open-source software which is intended to provide a way for people to create their own social network. Libertree social networks can be free from commercial influence and manifestation, such as behaviour tracking, user profiling, advertising, data...
Pixelfed is an image sharing platform with focus on Privacy, Safety and Security, an ethical alternative to centralized platforms like Instagram.
kune is a social network where you can communicate, collaborate and share between equals, using different web tools: documents, calendars, chats, wiki, messages, tasks, forums, barters.
