Best Free Open-Source Social Networking Software in 2026
Want to run your own social network without Big Tech? Open-source social networking software lets you build and self-host a community you control. Here are the best free options in 2026.
Best Open-Source Social Networking Software in 2026
1. Mastodon
The leading decentralized microblogging platform - the open Twitter/X alternative powering the Fediverse. Self-host your own server (instance).
2. Friendica
A flexible social platform that connects across the Fediverse and integrates with multiple networks.
3. HumHub
A clean, customizable social network kit ideal for private communities, intranets, and team networks.
4. Misskey
A feature-rich, customizable microblogging platform with a vibrant Fediverse presence.
5. Elgg
A mature open-source engine for building custom social networks and communities.
How to Choose Open-Source Social Software
For a public, federated network, choose Mastodon or Misskey; for a private community or intranet, HumHub or Elgg. Consider your hosting skills, moderation needs, and whether you want to connect to the wider Fediverse. For more, see our guide to the best community software.
Frequently Asked Questions
What is the best open-source social network software in 2026?
Mastodon is the best for public, federated microblogging, while HumHub and Elgg are best for private, self-hosted communities and intranets.
Is open-source social networking software free?
Yes. The software is free and open-source; you only pay for hosting if you self-host your own server.
What is the Fediverse?
The Fediverse is a network of interconnected, independently run social servers (like Mastodon and Misskey) that can communicate with each other using open standards.