Best Open Policy Agent alternatives in 2026
8 direct alternatives to Open Policy Agent, compared on pricing, features, and best-for use cases. Pick the right replacement without the marketing fluff.
Curated by Louis Corneloup · Updated Why people consider alternatives to Open Policy Agent
Open Policy Agent (OPA) is a general-purpose policy engine that decouples policy decision-making from application logic. It allows organizations to define and enforce policies consistently across various components of their software stack,… Teams most often switch away when one of these starts to bite:
- •Pricing at scale (rare for this tool, but feature limits push teams out)
- •Missing integrations with the rest of your stack.
- •Performance or scale limits as your needs grow.
- •A specific feature gap you have hit in security.
The 8 alternatives below cover the same core job (security) with different trade-offs. Ranked by real-signal score: G2 and Capterra ratings, media mentions, and editor review. No paid placement.
8 alternatives to Open Policy Agent
Ranked by real-signal composite (rankingScore + community + reviews) and direct relevance to Open Policy Agent.
- 1
Puppet
PaidInfrastructure automation and configuration management
Direct alternative4.2(761)Compare Open Policy Agent vs Puppet → - 2
FusionAuth
FreemiumCustomer identity and access management
Direct alternative4.6(179)Compare Open Policy Agent vs FusionAuth → - 3
Keycloak
FreeOpen-source identity and access management
Direct alternative4.3(101)Compare Open Policy Agent vs Keycloak → - 4
SuperTokens
FreemiumOpen-source user authentication
Direct alternative4.9(5)Compare Open Policy Agent vs SuperTokens → - 5
Authelia
FreeOpen-source authentication and authorization server
Direct alternativeCompare Open Policy Agent vs Authelia → - 6
Proton VPN
FreemiumBattle-tested at scaleSwiss privacy protection with unlimited bandwidth
Direct alternative4.5(41,058)Compare Open Policy Agent vs Proton VPN → - 7
Google Cloud
PaidBattle-tested at scaleEnterprise cloud with AI/ML strengths and BigQuery
Direct alternative4.6(7,225)Compare Open Policy Agent vs Google Cloud → - 8
Azure
PaidBattle-tested at scaleMicrosoft's cloud, essential for enterprises running Windows
Direct alternative4.4(97,447)Compare Open Policy Agent vs Azure →
Frequently asked questions
What is the best alternative to Open Policy Agent?
Based on real-signal scoring (G2 and Capterra ratings, media mentions, and editorial review), the top alternatives to Open Policy Agent are Puppet, FusionAuth, Keycloak. Each solves the same core job with different trade-offs on pricing, features, and integrations.
Is there a free alternative to Open Policy Agent?
Yes. FusionAuth is one of the freemium alternatives to Open Policy Agent listed here (Customer identity and access management). Other freemium options are flagged in the list below.
Why do people look for Open Policy Agent alternatives?
Common reasons teams switch away from Open Policy Agent: pricing that scales aggressively, missing integrations with the rest of their stack, performance or scale limits, or a specific feature gap in security. The alternatives on this page solve the same core problem with different trade-offs.
Side-by-side comparisons
In-depth comparison pages for Open Policy Agent versus each alternative.
Still considering Open Policy Agent?
See the full review, pricing breakdown, and community feedback before you decide.