Ory Oathkeeper VS Ory Kratos

Compare Ory Oathkeeper vs Ory Kratos and see what are their differences.

Ory Oathkeeper

A cloud native Identity & Access Proxy / API (IAP) and Access Control Decision API that authenticates, authorizes, and mutates incoming HTTP(s) requests. Inspired by the BeyondCorp / Zero Trust white paper. Written in Go. (by ory)

Ory Kratos

Next-gen identity server replacing your Auth0, Okta, Firebase with hardened security and PassKeys, SMS, OIDC, Social Sign In, MFA, FIDO, TOTP and OTP, WebAuthn, passwordless and much more. Golang, headless, API-first. Available as a worry-free SaaS with the fairest pricing on the market! (by ory)
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Ory Oathkeeper Ory Kratos
4 41
3,172 10,599
0.4% 1.2%
6.8 9.6
3 days ago 3 days ago
Go Go
Apache License 2.0 Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

Ory Oathkeeper

Posts with mentions or reviews of Ory Oathkeeper. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-03-16.
  • Launch HN: PropelAuth (YC W22) – End-to-end auth service for B2B products
    2 projects | news.ycombinator.com | 16 Mar 2022
  • oathkeeper alternatives - emissary, envoy, and Nginx
    4 projects | 18 Jan 2022
  • Launch YC S21: Meet the Batch, Thread #4
    3 projects | news.ycombinator.com | 5 Aug 2021
  • The reason okta spent $6.5B Auth0
    3 projects | news.ycombinator.com | 5 Mar 2021
    Hydra feels mature. I think it's their longest-developed product so far. Besides breaking changes during big upgrades(v0 -> v1beta -> v1), everything has been painless:

    - It runs anywhere with or without containers

    - API makes sense, good SDKs are available in all my used languages

    - RAM usage is surprisingly low compared to usage and has been great for resource-constrained environments

    - Stateless means horizontal scaling is as easy as `replicas++`

    - Sub-millisecond response times for some calls, much faster than our previous setup

    With Hydra, I know it's the client's fault when OAuth calls fail and not just a buggy server implementation. This is reinforced in dev mode with great errors like:

    - The authorization code has already been used

    - The request is missing the response_type parameter

    - Parameter "nonce" must be set when using the implicit flow

    - Redirect URL "https://example.com/callback" does not match

    On the flipside, Oathkeeper is not a mature product and has not yet reached v1. There are breaking changes planned [1]. It lacks support for at least one popular usecase (mine) out of the box [2]. Rules can be hard to create and debug. I wouldn't recommend Oathkeeper in its current state unless you're ready to dive in and fix things yourself. Once configured it sticks with the Ory trend: fast, lean, and stable.

    Depending on your usecase, Oathkeeper could be swapped out with any IAP like Pomerium or just with your reverse proxy's auth request support + some small custom shim.

    I haven't tried Keto (access control) or Kratos (user management) yet. Kratos is on my todo list.

    [1] https://github.com/ory/oathkeeper/issues/441

Ory Kratos

Posts with mentions or reviews of Ory Kratos. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-02-22.

What are some alternatives?

When comparing Ory Oathkeeper and Ory Kratos you can also consider the following projects:

Ory Keto - Open Source (Go) implementation of "Zanzibar: Google's Consistent, Global Authorization System". Ships gRPC, REST APIs, newSQL, and an easy and granular permission language. Supports ACL, RBAC, and other access models.

Keycloak - Open Source Identity and Access Management For Modern Applications and Services

fusionauth-issues - FusionAuth issue submission project

SuperTokens Community - Open source alternative to Auth0 / Firebase Auth / AWS Cognito

emissary - open source Kubernetes-native API gateway for microservices built on the Envoy Proxy

zitadel - ZITADEL - The best of Auth0 and Keycloak combined. Built for the serverless era.

warrant-demo-app-ts - Example demonstrating how to add end-to-end authorization & access control to an ExpressJS + React app using Warrant

Ory Hydra - OpenID Certified™ OpenID Connect and OAuth Provider written in Go - cloud native, security-first, open source API security for your infrastructure. SDKs for any language. Works with Hardware Security Modules. Compatible with MITREid.

OPA (Open Policy Agent) - Open Policy Agent (OPA) is an open source, general-purpose policy engine.

edge-agent - Warrant Edge agent