About OpenSourceSports
Official rulebooks, community-created sports, and the open path from game to governing body.
162
Sports Indexed
4998
Rule Topics
134
Organizations
8
Contributors
1
Proposals
414
Rule Versions
Mission
Sports rules shouldn't be locked behind PDFs or buried in arcane documents. OpenSourceSports makes every rulebook searchable, citable, and transparent. We source rules directly from governing bodies, keep them current, and let the community flag discrepancies, propose improvements, and track changes across seasons.
Two Tracks, One Platform
Official sports are sourced from governing body publications (NFL, NBA, UFC, FIFA, etc.) and indexed into searchable topics. Each topic shows the verdict, relevant rule references, and a link to the source. Organizations can claim ownership, submit seasonal updates, and respond to community feedback.
Custom sports can be created by anyone. The community votes and proposes improvements. Once a sport has at least 50 supporters and 3 community rule proposals, it graduates to "Community Verified" status. From there, organizations can endorse it — and it becomes an official sport with governed rules.
Trust Model
| Tier | Meaning |
|---|---|
| Officially Regulated | Managed directly by a governing body (NFL, FIFA, etc.) |
| Endorsed | A recognized organization vouches for the ruleset |
| Community Verified | 50+ supporters and 3+ community rule proposals |
| Unverified | Newly submitted, awaiting community review |
Open Source
The rule data is sourced from a public GitHub repository. Anyone can propose corrections via pull requests or through the in-app proposal system. The platform syncs with the repo on a regular schedule and auto-detects content changes via SHA-256 hashing, so updates land in the app without a redeploy.
What public beta means here
We're actively improving page layouts, navigation, tools, and contribution flows. That doesn't mean unstable rule data — we treat data changes as versioned improvements, preserve existing URLs, and keep source provenance public.
What we keep stable
- Published sport slugs and rule URLs.
- Source provenance and public rule history.
- Existing user-created sports, proposals, votes, and support signals.
- Free public access to official rule pages.