Third-Party Notices
Version: THIRD-PARTY-2026-02-21 • Last updated: February 21, 2026
This page lists major third-party services and open-source libraries used by Layout Duels. License text and obligations may apply.
Core platform services
- Firebase (Authentication, Firestore, Realtime Database, Hosting, Cloud Functions)
- Stripe (Checkout, Customer Portal, Webhooks)
Key libraries / components (non-exhaustive)
- Next.js
- React
- chess.js
- Stockfish (engine, when enabled)
- Howler.js (audio)
- Tailwind CSS
Questions
If you have a question about licensing or third-party disclosures, use Support.