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Repositories in this selection 4 · UTC 2026-11-03
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1—Aauthzed / spicedbOpen Source, Google Zanzibar-inspired database for scalably storing and querying fine-grained authorization dataGoApache-2.0 · PermissiveInsufficient rank history7,188439——2026-11-01
2—Oopenfga / openfgaA high-performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar.GoApache-2.0 · PermissiveInsufficient rank history6,083549——2026-11-02
3—PPermify / permifyAn open-source authorization as a service inspired by Google Zanzibar, designed to build and manage fine-grained and scalable authorization systems for any application. — Permify is now part of FusionAuth 🎉GoAGPL-3.0 · Share derivative sourceInsufficient rank history5,968330——2026-11-02
4—Oory / ketoThe most scalable and customizable permission server on the market. Fix your slow or broken permission system with Google's proven "Zanzibar" approach. Supports ACL, RBAC, and more. Written in Go, cloud native, headless, API-first. Available as a service on Ory Network and for self-hosters.GoApache-2.0 · PermissiveInsufficient rank history5,418394——2026-09-04
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