Assembly Line

GrantForge vs Styra DAS

GrantForge and Styra DAS are both authorization engine software. GrantForge is open source under MIT, with 106 GitHub stars. Styra DAS is a commercial product from Styra.

Which to pick

Pick GrantForge when
A Java team needs central RBAC and ABAC with row and field-level rules across several Spring services.
Pick Styra DAS when
A platform team runs OPA in many places and wants central policy management and impact analysis.

Side by side

What it does

A permission platform for Spring applications that manages both functional rights (who can do what) and data and field-level access (who sees which data).

Control plane for managing, testing and distributing Open Policy Agent policies across Kubernetes, microservices and infrastructure.

Watch out

Small community and recently renamed from AuthX.

Styra's core team joined Apple in 2025, leaving the commercial product's future unclear.

Ready for

Usable (both)

Runs as

Self-hosted server

Cloud service and self-hosted server

Built with

Java, Spring Boot, Spring Security, Vue and TypeScript

Rego and Open Policy Agent

Source code

Open source, MIT (permissive)

Closed source, sold by Styra

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Closed source: you use it under the maker's terms and cannot change or resell the code.

How widely known

106 GitHub stars

No Wikipedia article of its own

How established

Established: started 7 years ago, latest release v2026.3.0.

Not known

More authorization and permission engines

Every authorization engine product and project, ranked

Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.