Mastodon
Free, open-source, decentralised social network made up of independently run servers.
Last verified: October 2, 2026
Official links
Links go directly to the developer, publisher or authorized store. Welcome Free Tools does not host any files. Official domain: joinmastodon.org
Overview
Mastodon is free and open-source software for running decentralised social networks. Instead of one company running a single site, thousands of independent servers, called instances, run Mastodon and connect to each other through the fediverse. Official apps are available for Android and iOS, and every server can also be used in a web browser.
To join, you pick a server, often based on a topic, language or region, and create an account there. You can still follow and talk to people on other servers. Mastodon has a chronological timeline without algorithmic ranking, content warnings to hide sensitive posts behind a click, hashtags for discovery and fine-grained privacy options for each post. Each server sets its own rules and moderation. Mastodon itself is developed by a non-profit and is free to use, though some servers ask for voluntary donations.
Visit joinmastodon.org to choose a server and download the official apps.
Features
- Decentralised network of independent servers
- Follow people across different servers
- Chronological timeline without ads
- Content warnings and per-post privacy options
- Free and open-source software
Questions and answers
What is Mastodon?
Free, open-source, decentralised social network made up of independently run servers. It is developed by Mastodon gGmbH.
Is Mastodon free?
Mastodon is listed as: Free & Open Source. Whether optional purchases exist has not been verified yet. Pricing can change, so confirm on the official source.
Is Mastodon available on Android?
Yes, Android is a listed platform. Get it from the official source linked on this page.
Does Mastodon have a Windows version?
Windows is not among the listed platforms. Listed platforms: Android, iOS, Web.
Where is the official Mastodon website?
The official website is https://joinmastodon.org/ (official source verified on October 2, 2026).
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