Akasha is a decentralized social media network powered by the Ethereum world computer and embedded into the Inter-Planetary File System. (License not yet known)
Cross-platform
Diaspora is the privacy aware, personally controlled, do-it-all, open source social network. The developers aim for it to be a decentralized alternative to social network services like Facebook. (AGPL)
Cross-platform
Elgg is an open, flexible social networking engine, designed to run at the heart of any socially-aware application. (GPL)
Cross-platform
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. (AGPL)
Cross-platform
Hubzilla is a powerful platform for creating interconnected websites featuring a decentralized identity, communications, and permissions framework built using common webserver technology. (MIT)
Cross-platform
Known is an open, flexible social publishing platform. Publish in a group or as an individual with a variety of media, from blog posts and photographs to files and points on a map. Each post or Known wiste can be private or public. (Apache)
Cross-platform
Mastodon is a free, open-source social network server based on open web protocols like ActivityPub and OStatus. The social focus of the project is a viable decentralized alternative to commercial social media silos that returns the control of the content distribution channels to the people. (AGPL)
Cross-platform
Mattermost is an open source, self-hosted Slack-alternative. As an alternative to proprietary SaaS messaging, Mattermost brings all your team communication into one place, making it searchable and accessible anywhere. (MIT)
Cross-platform
Movim is a social and chat platform that act as a frontend for the XMPP network. Chatrooms, articles, video-conferences; Movim centralizes all you need to communicate with your colleagues, friends or family in one simple interface. (AGPL)
Cross-platform
Open Source Social Network (OSSN) is a social networking software written in PHP. It allows you to make a social networking website and helps your members build social relationships, with people who share similar professional or personal interests. (OSSN)
Cross-platform
Pligg CMS provides social networking software that encourages visitors to register on your website so that they can submit content and connect with other users. (AGPL)
Cross-platform
PyBossa is an open source platform for crowd-sourcing online (volunteer) assistance to perform tasks that require human cognition, knowledge or intelligence (e.g. image classification, transcription, information location etc). (AGPL)
Cross-platform
WriteFreely is free and open source software for easily publishing writing on the web. Use it to start a personal blog — or an entire community. (AGPL)
Cross-platform
Zulip is a powerful, open source group chat application that combines the immediacy of real-time chat with the productivity benefits of threaded conversations. Zulip is 100% open source software, built by a vibrant community of hundreds of developers from all around the world. (Apache)
Linux
14 applications