The best open source alternative to Mastodon is Hey. If that doesn't suit you, we've compiled a ranked list of other open source Mastodon alternatives to help you find a suitable replacement. Other interesting open source alternative to Mastodon is Bluesky.
Mastodon alternatives are mainly Decentralized Social Networks but may also be Web3 Platforms. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Mastodon.
A blockchain-powered social platform offering censorship-resistant content sharing, user-owned data, and innovative monetization options.

Hey is a groundbreaking decentralized social networking platform built for the Web3 era. It combines the best aspects of traditional social media with the power of blockchain technology to create a more open, transparent, and user-centric experience.
Key benefits of Hey include:
Hey reimagines social networking for a decentralized future, empowering users with greater control, privacy, and earning potential. Join the revolution in digital social interaction and experience the freedom of Web3 social networking.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
A decentralized social network focused on fostering meaningful interactions and giving users control over their data and experience.

Bluesky is a new kind of social network that aims to reimagine social media from the ground up. Some key features and benefits include:
Decentralized architecture: Bluesky uses an open protocol called the Authenticated Transfer Protocol (ATP) that allows users to own their identity and data across different apps and services. This gives users more control and portability.
Focus on community: The platform is designed to foster more meaningful interactions and connections between users, moving away from the viral content and engagement metrics that dominate other social networks. Features like curated feeds and topic-based communities help surface quality content.
User control: Bluesky gives users powerful tools to customize their experience, from fine-grained content moderation settings to the ability to create custom algorithms for their feed. Users have more say in what they see and how they interact.
Open ecosystem: As an open protocol, Bluesky enables an ecosystem of interoperable apps and services. Users aren't locked into a single application and developers can innovate on top of the protocol.
Privacy and data ownership: Users have full control over their data and can easily take it with them between apps or delete it entirely. There's no centralized company harvesting user data.
Innovative features: Things like decentralized identity, content-addressed data, and algorithmic choice are pushing the boundaries of what's possible in social media.
While still in its early stages, Bluesky represents an exciting new direction for social networking that puts users first and reimagines many of the core assumptions of how social platforms should work. It's worth keeping an eye on as it develops and grows.