Bracket – selfhosted tournament system

In plain words

Bracket is an open-source, self-hosted tournament system designed for small sports clubs and individuals who cannot afford expensive commercial alternatives. It supports flexible tournament setups with multiple stages using round robin, single elimination, or swiss formats. Built with Python FastAPI backend and Next.js frontend, the system has been tested through six paid tournaments hosted by its creator's badminton club. The software is freely available on GitHub.

written from the facts on this page · September 2026

From the sources

Selfhosted tournament system. Contribute to evroon/bracket development by creating an account on GitHub.

Tournament system meant to be easy to use. Bracket is written in async Python (with FastAPI ) and Vite as frontend using the Mantine library. A demo is available for free at https://www.bracketapp.nl/demo . The demo lasts for 30 minutes, after which your data will de deleted. git clone [email protected]:evroon/bracket.git cd bracket sudo docker compose up -d This will start the backend and frontend of Bracket, as well as a postgres instance. You should now be able to view bracket at http://localhost:3000 . You can log in with the following credentials: docker exec bracket-backend uv run --no-dev ./cli.py create-dev-db See also the quickstart docs . Read the usage guide for how to organize a…from github.com

In the maker’s words, at launch

Over the last two years, I developed a tournament system called Bracket. Most (if not all) tournament systems available online are paid and ask tons of money (a typical minimum subscription costs 50 euros per month, and go up to 500 euros per month or so), which is not feasible for many small sport…

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