- mastodon: with thousands of interconnected communities to choose from, and the tools to make your own, Mastodon is the world’s largest free, open-source, decentralized microblogging network. In a Planet Debian entry, Carl Chevet talks about https://carlchenet.com/the-importance-of-choosing-the-correct-mastodon-instance/" target=_blank>The Importance of Choosing the Correct Mastodon Instance.
- sandstorm: self-hostable web productivity suite. It's implemented as a security-hardened web app package manager.
- agorakit is a web based open source groupware for citizens initiatives. By creating collaborative groups, people can discuss, organize events, store files and keep everyone updated when needed. Agorakit is a forum, agenda, file manager, mapping tool and email notifier.
- diaspora: instead of everyone’s data being held on huge central servers owned by a large organization, diaspora* exists on independently run servers (“pods”) all over the world. You choose which pod to register with, and you can then connect seamlessly with the diaspora* community worldwide.
- matrix: An open network for secure, decentralized communication. There is a Synapse, which is a reference server.
- 2018/03/12 Matrix - Slack alternative, from Planet Debian (2018/03/10)
The Slack Threat has some pro and con arguments for the alternative communication channels.
2018/05/18: a Slack alternative: Mattermost
2018/06/11: #DeleteFacebook and alternative Social Networks
2018/09/02: #Friendica vs #Hubzilla vs #Mastodon.
2018/09/25 ManyVerse: is a social network mobile app with features you would expect: posts, threads, likes, profiles, etc. But it's not running in the cloud owned by a company, instead, your friends' posts and all your social data live entirely in your phone. Remarks at Hacker News.