Oso

Oso provides Authorization-as-a-Service, offering developers a simple and flexible way to manage permissions without overhauling their application architecture. Similar to how LaunchDarkly handles feature flags or Auth0 streamlines authentication, Oso delivers an API that can answer key permissions questions like who can perform specific actions or why a user has access to certain resources. 

Oso supports basic RBAC, fine-grained permissions, and custom roles, enabling teams to implement robust authorization in a matter of weeks. By authorizing locally using your existing database, Oso eliminates the need for data syncing and allows for incremental adoption across your apps and services. For centralized permissions management, Oso Cloud provides an additional layer of flexibility and scalability.