Compare tools side by side · TechInTrends

Headless, API-first identity and user management server (login, MFA, recovery) from Ory.

CNCF open-source identity and access management server with SSO, OIDC, SAML and user federation.

Hosted auth and user management with drop-in UI components, popular in the Next.js ecosystem.

Self-hosted identity provider with flows, SSO (OIDC/SAML/LDAP) and an app proxy; homelab and enterprise favorite.

Head to head

Metric	Ory Kratos	Keycloak	Clerk	authentik
Stars	13.9k	37.7k	n/a	26.3k
Weekly downloads	n/a	n/a	3.6M	n/a
Download growth	n/a	n/a	+49%	n/a
Popularity score	76/100	84/100	80/100	81/100
Forks	1.2k	9.1k	n/a	2.1k
Open issues	240	3.4k	n/a	911
Last commit	3mo ago	1w ago	n/a	3d ago
Latest version	n/a	n/a	7.9.25	n/a
License	Apache-2.0	Apache-2.0	n/a	n/a
First released	2018	2013	n/a	2019
Signals	None	Popular	None	Trending
Listed in	Security & Identity › Identity providers & SSO	Backend › Authentication Libraries Security & Identity › Identity providers & SSO	Backend › Authentication Libraries Security & Identity › Identity providers & SSO	Security & Identity › Identity providers & SSO

Weekly downloads over time

Hover for exact values; switch to log scale for tools of very different sizes. Not shown (no comparable download data): Ory Kratos, Keycloak, authentik.