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Hubzilla

An open platform for decentralized social networks and marketplaces.  It's censorship-resistant and has built-in monetization methods. Built with Polkadot and IPFS tech stack.

GNU social connects you to a free network of thousands of communities that discuss daily on a variety of topics, each being part of the whole. GNU social supports both single-user and community modes and can be used in an intranet environment or as part of the wider open network. The free and open source microblogging server is written in PHP and built on-top of the OStatus standard for inter-operation between installations.

With JomSocial you can quickly setup a social network for your Joomla-powered website. The extension is built to be friendly to both developers and regular Joomla users. Features you have come to expect from a social network such as activity streams, comments, featured posts, hashtags, mentions, video shares, photo shares, location shares, moods, polls and more, is all included in the JomSocial extension for Joomla. Currently over 180,000 communities globally use JomSocial to power their social network.

GNU social connects you to a free network of thousands of communities that discuss daily on a variety of topics, each being part of the whole. GNU social supports both single-user and community modes and can be used in an intranet environment or as part of the wider open network. The free and open source microblogging server is written in PHP and built on-top of the OStatus standard for inter-operation between installations.

Diaspora is a privacy-aware, distributed, open source social network developed by the Diaspora Foundation. The social network is built up of distributed pods, that can be self-hosted by anyone. However, to join the Dispora, you can simply chose an already hosted pod on the network. Members can share and discuss content with others, and label content with hashtags, allowing them to easily follow certain topics that they are interested in. Diaspora also supports @mentions and re-shares of posts, features which all adds up to an intricate communication and sharing system, distributed across the globe.

An ethical social network for a brighter tomorrow. Okuna launched on the scene in 2018 with a Kickstarter campaign under the name Openbook, where they succeeded to raise over $50,000. The goal of the project is to build a free and open source social media platform that respects user privacy. Okuna is still in closed beta and provides registration via invites only.