GitHub - ValueMelody/melody-auth: A turnkey OAuth & authentication system, designed for both Cloudflare Workers and Node.js
Briefly

Melody Auth is designed to provide a turnkey OAuth and authentication solution that can be deployed seamlessly on Cloudflare or self-hosted, allowing users to quickly implement a robust system without complex setup.
By using Cloudflare, developers can significantly minimize DevOps overhead, but for those seeking complete control over their authentication systems, a self-hosted option with Node.js, Redis, and PostgreSQL is also available.
The admin panel facilitates easy management of applications, users, scopes, and roles, serving not only as a management tool but also as an example of how to use the React SDK and REST APIs effectively.
With a focus on security, Melody Auth implements a secure communication channel that utilizes client credential token exchange flows, combined with the use of Proof Key for Code Exchange (PKCE) to enhance protection during the authorization process.
Read at GitHub
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