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Open Source Authorization & Permissions Tools using Java

A curated collection of the best open source systems for defining and enforcing access control policies. using Java.

Secure authentication and access control made simple
  • Stars


    36,499
  • Last commit


    18 hours ago
  • License


    Apache-2.0
Comprehensive open source identity management solution offering single sign-on, social login, and fine-grained authorization for applications and services.

Open Source Alternative to:

Build scalable authorization in minutes, not months
  • Stars


    5,942
  • Last commit


    2 days ago
  • License


    AGPL-3.0
Open-source authorization service for implementing fine-grained access controls. Centralized, scalable solution supporting RBAC, ABAC and ReBAC with Google Zanzibar-inspired architecture.

Open Source Alternative to:

Secure, policy-based access control for modern applications
  • Stars


    4,563
  • Last commit


    2 days ago
  • License


    Apache-2.0
A scalable authorization layer that provides fine-grained access control through externalized policies, enabling secure and flexible permissions management.

Open Source Alternative to:

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