league/oauth2-server vs Microsoft Entra ID: Side-by-Side Comparison (2026)

league/oauth2-server: A PHP OAuth 2.0 authorization server implementation with support for various grants and RFCs..

Microsoft Entra ID: Cloud-based identity and access management solution for enterprises. built by Microsoft. Core capabilities include Multi-factor authentication (MFA), Single sign-on (SSO), Passwordless authentication..

Both serve the Access Management market but differ in approach, feature depth, and target audience.

league/oauth2-server is open-source with 6,618 GitHub stars. Microsoft Entra ID is developed by Microsoft. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

league/oauth2-server and Microsoft Entra ID serve similar Access Management use cases: both are Access Management tools. Key differences: league/oauth2-server is Free while Microsoft Entra ID is Commercial, league/oauth2-server is open-source. Review the feature comparison above to determine which fits your requirements.