Open source Auth & identity

Keycloak

96 · Healthy

Identity and access management server with SSO, OIDC, SAML and user federation (CNCF).

Free to useApache-2.0★ 37kLast commit yesterday

authentik

91 · Healthy

Identity provider with flows, SSO across OIDC, SAML, LDAP and a proxy outpost.

Free core, paid extrasMIT★ 26kLast commit yesterday

Logto

86 · Healthy

Auth and identity service for SaaS and AI apps, built on OIDC with organizations and RBAC.

Free core, paid extrasMPL-2.0★ 15kLast commit yesterday

ZITADEL

84 · Healthy

Multi-tenant identity platform with event-sourced audit trail and B2B organizations.

AGPL-3.0Relicensed 2025★ 15kLast commit 3 days ago

Hanko

84 · Healthy

Authentication server with passkeys, passwords, social login and drop-in web components.

AGPL-3.0★ 9.0kLast commit 4 days ago

Better Auth

83 · Healthy

TypeScript authentication framework with email and social login, passkeys, two-factor, organizations and SSO plugins.

Free to useMIT★ 30kLast commit yesterday

Ory Kratos

78 · Stable

Headless identity and user-management server with an API-first design.

Free to useApache-2.0★ 14kLast commit 2 months ago

Pocket ID

78 · Stable

Lightweight OpenID Connect provider that signs users in to your apps with passkeys only.

Free to useBSD-2-Clause★ 9.5kLast commit 2 days ago

SuperTokens

74 · Stable

Authentication backend with prebuilt UI, sessions and multi-tenancy.

Free core, paid extrasApache-2.0★ 15kLast commit 8 days ago

Authelia

71 · Stable

Single sign-on and two-factor portal that sits in front of web apps via a reverse proxy.

Free to useApache-2.0★ 29kLast commit 2 days ago

Ory Kratos

Headless identity and user-management server with an API-first design.

GitHub ory.com

Alternative to

Auth0 Amazon Cognito Stytch

Will it still be around?

Stable

Score 78/100

Details

Can a business use it freely?

Free to use

Apache-2.0 · open source (permissive)

Details

Features compared

Has the featureshas,Doesn't have themdoesn't4 features

5/11 Auth0 features free in Ory Kratos

✕ doesn't have it · ◐ partly · $ higher plan or paid editionBoth have 4

Headline Auth0 features on the B2C Essentials plan, and whether Ory Kratos has each in its free, self-hosted edition.

Auth0 and Ory Kratos, feature by feature
Feature	Auth0B2C Essentials plan	Ory Kratos5 of 11 free
Auth0 has, Ory Kratos doesn't4
Hosted login pages	IncludedUniversal Login	PartlyBring your own UI; reference UI included
Roles and permissions	Included	PartlyThrough Ory Keto
User management console	Included	NoAPI only when self-hosted
OAuth 2.0 and OIDC provider	Included	PartlyThrough Ory Hydra
Ory Kratos has, Auth0 doesn't1
Breached password detection	Higher planProfessional plan	YesHave I Been Pwned check
Both have4
Social login	Included	Yes
Multi-factor authentication	Included	YesTOTP and WebAuthn
Passkeys and passwordless	Included	Yes
Custom code in login flows	IncludedActions	YesWebhooks in flows
Neither has fully2
Enterprise SSO for your customers	Higher planSAML and OIDC connections, Professional	PartlyOIDC free; SAML on Ory Network
Machine-to-machine tokens	Higher planAdd-on	PartlyThrough Ory Hydra

Sources

Auth0, checked 2026-10-09: auth0.com
Ory Kratos, checked 2026-10-09: ory.sh, ory.sh

Compare every Auth0 alternative

Flat Rate Deploy

List price checked 8 Oct 2026 · Source · Disclaimer

Bespoke

We set up Ory Kratos for you. You pay once.

Worth it from 10,000 monthly active users

You pay $35 a month for Auth0. Setup is $3,000, paid once, and after that Ory Kratos runs for about $324 a month (your server, about $24, plus about $300 of maintenance), so at this size it takes more than 12 months to pay back.

Worth it from: 10,000monthly active userspays back within 12 months
Setup, paid once: $3,000fixed price, agreed up front
Maintenance: $150/houronly when you ask for it

What we do

Data migrationRecords, files and history moved from Auth0, with a test run before the cut-over
ConfigurationWorkflows, custom fields, roles, permissions and SSO set up for your team
IntegrationsConnected to your CRM, Slack, accounting tools and APIs
MaintenanceUpdates, fixes and admin help when you ask, at $150 an hour
Paid editionsThe vendor's paid features, enabled, with the licence at cost
ComplianceData residency, audit logs, data processing agreements, security questionnaires
TrainingAn admin walkthrough, a runbook and sessions for your team

Total spent, month by monthAuth0Bespoke Ory Kratos

Show as a table

Month	Auth0	Bespoke	Saved so far
Today	$0	$3,000	–
Month 3	$105	$3,972	–
Month 6	$210	$4,944	–
Month 9	$315	$5,916	–
Month 12	$420	$6,888	–
Month 18	$630	$8,832	–
Month 24	$840	$10,776	–
Month 30	$1,050	$12,720	–
Month 36	$1,260	$14,664	–

Servers run on your own cloud account, paid to your provider. Running cost counts about 2 hours of maintenance a month; you're billed only for hours you ask for. Migration and the other activities are quoted with the setup.

Get a fixed quote

Health score: 78/100

Stable · activity, bus factor and issue responsiveness, from GitHub

Score v2 · How it works

Activity

45% weight

77/100

Last commit 73 days ago (87/100).
406 commits in the past 12 months (100/100).
2 releases in the past 12 months (33/100).

Bus factor

30% weight

93/100

Top contributor wrote 30% of the last 99 commits (past 12 months).
13 people authored those commits.

Responsiveness

25% weight

64/100

90% of all issues are closed (151 open, 1305 closed) (99/100).
12 of 30 recent issues got a reply or were closed (40/100).

License

Free to use

Apache-2.0 · Open source (permissive)

What you need to do

Use, change, host and sell it for any purpose, commercial included, with no license to buy. Keep the copyright notice.

Apache License 2.0 · Open source (permissive). OSI-approved license with few conditions beyond keeping the copyright notice.

Detected by GitHub as Apache-2.0.

GitHub activity

Stars: 14k
Forks: 1.2k
Commits, 12 mo: 406; last 2 months ago
Releases, 12 mo: 2; last 7 months ago
Contributors: 236; 13 in last 99 commits
Open issues: 151; 1.3k closed

Snapshot from 2026-10-08 · Funding: patreon, open collective

Top contributors

No pull requests merged on GitHub since 10 October 2025. Some projects, such as Odoo, merge changes outside GitHub's merge button, so their contributors don't show here yet.

Flat Rate Deploy$39/mo