Semaphore

December 12, 2025 · View on GitHub

Important

Semaphore is no longer supported, the semaphore.social domain is now forwarded to semaphore-social.vercel.app and will be suspended to avoid paying for domain costs. The vercel instance will stay up as long as it remains free. You can consider using the original pinafore.social as an alternative.

Semaphore

Accessible, simple and fast web client for Mastodon.

Semaphore is available at semaphore.social. Beta releases are at beta.semaphore.social.

For updates and support, follow @semaphore@fosstodon.org.

See the user guide for basic usage. See the admin guide if Semaphore cannot connect to your instance.

With thanks to

Semaphore continues the Pinafore project and would not exist without the exemplary work of Nolan Lawson and the original contributors.

Changelog

For a changelog, see the GitHub releases.

For a list of breaking changes, see BREAKING_CHANGES.md.

Developing and testing

See CONTRIBUTING.md for how to run Semaphore in dev mode and run tests.