Duo Single Sign-On (SSO) vs league/oauth2-server: side-by-side comparison (2026)
Duo Single Sign-On (SSO) is a commercial access management solution by Duo Security. league/oauth2-server is a free access management solution. Features, integrations, deployment and the company behind each one, side by side.
SSO solution with MFA integration for cloud and on-premises applications
A PHP OAuth 2.0 authorization server implementation with support for various grants and RFCs.
Side-by-side comparison
Feature
Duo Single Sign-On (SSO)
league/oauth2-server
Pricing model
Commercial
Free
Category
Access Management
Access Management
Deployment and fit
Deployment type
Hybrid
On-Premises
Company size fit
Startup, SMB, Mid-Market, Enterprise
Startup, SMB, Mid-Market, Enterprise
Open source
GitHub stars
–
6,618
Last commit
–
Aug 2025
Company
Company
Duo Security
–
Use cases and capabilities
Single Sign On
Yes
No
SSO
Yes
No
MFA
Yes
No
Authentication
Yes
No
PHP
No
Yes
Core features
10 features listed
No features listed
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