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GNU social

Twitter is a popular social network and microblogging site for breaking news in entertainment, sport, politics and nice topics. On Twitter, users can share their ideas in 280 characters or less, or retweet others that they agree with or want to amplify. What makes Twitter unique is the opportunity to discover what's happening in the world in close to real-time. The fact that you can follow a specific audience in a specific niche also makes twitter a great tool for diving deeper and staying up-to-date with topics of your interest.

Plurk is a micro-blogging social network that allow you to share short messages, links, videos and everything else with your friends. Much like Twitter, Plurk is capped out at 360 text characters per post. Each user of Plurk get's a profile page and a timeline, which lists all the updates received in chronological order, and delivered to other users who have chosen to receive them follow the creator.

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.

Mastodon is a free and open source decentralized social network that is used by over 4.4 million people. At mastodon you can follow friends, discover and rally around topics, and share links, pictures, text, video, much like Twitter. The main difference with Mastodon is the decentralized nature of the software. Anyone is free to start their own Mastodon server, that automatically interconnects with all the other Mastodon servers. Since the network is community-owned and not backed by any venture capital you can be sure that your data will not be monitized and that you will have an ad-free experience.

A free and ethical photo sharing platform, powered by ActivityPub federation protocol. Pixelfed is open-sourced software licensed under the AGPL license.

A free and open-source modern forum software written in PHP. With Flarum you can eaisly setup your own discussion froum and host it online.