Alternatives

Here is a feature comparison with other OpenID Connect server software.

Projects and protocols

Canaille voluntarily only implements the OpenID Connect protocol to keep its codebase simple.

Software	FLOSS	Language	LOC	Binary Size	OIDC	SAML	CAS	SCIM	LDAP	SQL
Canaille	✅	Python	16k	~15MB	✅	❎	❎	🟠	✅	✅
Auth0	❌	❔	❔	N/A (Cloud)	✅	☑️	❎	✅	✅	❔
Authelia	✅	Go	185k	~25MB	✅	❎	❎	❌	✅	✅
Authentic2	✅	Python	121k	~20MB	✅	☑️	☑️	❌	✅	✅
Authentik	✅	Python	440k	~800MB (Docker)	✅	☑️	❎	✅	✅	✅
Authgear	✅	Go	856k	~50MB	✅	☑️	❎	❌	✅	✅
CAS	✅	Java	900k	~150MB (WAR)	✅	☑️	☑️	✅	✅	❌
Connect2id	❌	❔	❔	~80MB (JAR)	✅	☑️	❎	❌	✅	✅
FusionAuth	❌	Java	❔	~200MB (ZIP)	✅	☑️	❎	✅	✅	✅
Gluu	✅	Java	636k	~2GB (Container)	✅	☑️	☑️	✅	✅	✅
Hydra + Kratos	✅	Go	119k	~40MB (2 binaries)	✅	☑️	❎	❌	✅	✅
Kanidm	✅	Rust	387k	~30MB	✅	❎	❎	🟠	✅	✅
Keycloak	✅	Java	1.1M	~250MB (JAR)	✅	☑️	☑️	✅	✅	✅
LemonLDAP	✅	Perl	410k	~50MB (Package)	✅	☑️	☑️	❌	✅	✅
Logto	✅	TypeScript	387k	~100MB (Docker)	✅	☑️	❎	❌	❌	✅
Okta	❌	❔	❔	N/A (Cloud)	✅	☑️	❎	✅	✅	✅
Pocket ID	✅	Go	❔	~20MB	✅	❎	❎	❌	✅	✅
SimpleIdServer	✅	C#	829k	~120MB (.NET)	✅	❎	❎	✅	❌	✅
SuperTokens	✅	Java	451k	~100MB (JAR)	✅	☑️	❎	✅	❌	✅
WSO2	✅	Java	1.4M	~500MB (ZIP)	✅	☑️	❎	✅	✅	✅
Zitadel	✅	Go	760k	~60MB	✅	☑️	❎	✅	❌	✅

Authentication Methods

Here is the support for the most common authentication methods.

Software	Password	TOTP	HOTP	SMS	Email	WebAuthn
Canaille	✅	✅	✅	✅	✅	❌
Auth0	✅	✅	✅	✅	✅	✅
Authelia	✅	✅	❌	❌	🟠	✅
Authentic2	✅	✅	✅	✅	✅	❌
Authentik	✅	✅	❌	✅	✅	✅
Authgear	✅	✅	❌	✅	✅	✅
CAS	✅	✅	✅	✅	✅	✅
Connect2id	🟠	🟠	🟠	🟠	🟠	🟠
FusionAuth	✅	✅	❌	✅	✅	✅
Gluu	✅	✅	✅	✅	✅	✅
Hydra + Kratos	✅	✅	❌	✅	✅	✅
Kanidm	✅	✅	❌	❌	❌	✅
Keycloak	✅	✅	✅	🟠	🟠	✅
LemonLDAP	✅	✅	❌	✅	✅	✅
Logto	✅	✅	❌	✅	✅	✅
Okta	✅	✅	✅	✅	✅	✅
Pocket ID	❌	❌	❌	❌	❌	✅
SimpleIdServer	✅	✅	✅	✅	✅	✅
SuperTokens	✅	✅	❌	✅	✅	✅
WSO2	✅	✅	❌	✅	✅	✅
Zitadel	✅	✅	❌	🟠	✅	✅

OAuth2/OIDC Specifications Compatibility

Software	Token Revocation	Dynamic Registration	Dynamic Management	PKCE	Token Introspection	Discovery	Device Flow	Token Exchange	MTLS	JAR	PAR	RAR	DPoP
Canaille	✅	✅	✅	✅	✅	✅	❌	❌	❌	✅	❌	❌	❌
Auth0	✅	✅	❌	✅	❌	✅	✅	❌	✅	✅	✅	✅	❌
Authelia	✅	❌	❌	✅	✅	✅	✅	❌	❌	🟠	✅	❌	❌
Authentic2	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌
Authentik	✅	✅	❌	✅	✅	✅	✅	❌	❌	❌	❌	❌	❌
Authgear	✅	✅	✅	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌
CAS	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌
Connect2id	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	✅
FusionAuth	❌	❌	❌	✅	❌	✅	✅	❌	❌	❌	❌	❌	❌
Gluu	✅	✅	✅	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌
Hydra + Kratos	✅	❌	❌	✅	✅	✅	✅	❌	✅	❌	❌	❌	❌
Kanidm	✅	✅	❌	✅	❌	✅	❌	❌	❌	❌	❌	❌	❌
Keycloak	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	🟠
LemonLDAP	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌
Logto	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌
Okta	✅	❌	❌	✅	✅	✅	✅	✅	❌	✅	✅	✅	✅
Pocket ID	❔	❌	❌	✅	✅	✅	✅	❌	❌	❌	❌	❌	❌
SimpleIdServer	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌
SuperTokens	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌
WSO2	✅	✅	❌	✅	✅	✅	✅	❌	✅	❌	❌	❌	❌
Zitadel	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌

OpenID Connect Advanced Features

Software	OIDC Discovery	Dynamic Registration	RP-Initiated Logout	Session Management	Front-Channel Logout	Back-Channel Logout	CIBA	Prompt=create	Federation
Canaille	✅	✅	✅	❌	❌	❌	❌	✅	❌
Auth0	✅	✅	✅	❌	❌	✅	❌	❌	❌
Authelia	❌	✅	❌	❌	❌	❌	❌	❌	❌
Authentic2	❌	✅	❌	❌	❌	❌	❌	❌	❌
Authentik	❌	✅	❌	❌	❌	❌	❌	❌	❌
Authgear	❌	✅	❌	❌	❌	❌	❌	❌	❌
CAS	❌	✅	❌	❌	❌	❌	❌	❌	🟠
Connect2id	✅	✅	✅	✅	✅	✅	✅	❌	✅
FusionAuth	❌	✅	❌	❌	❌	❌	❌	❌	❌
Gluu	✅	✅	❌	❌	❌	❌	❌	❌	🟠
Hydra + Kratos	✅	✅	❌	❌	❌	❌	❌	❌	❌
Kanidm	❌	✅	❌	❌	❌	❌	❌	❌	❌
Keycloak	✅	✅	✅	✅	✅	✅	❌	❌	✅
LemonLDAP	❌	✅	❌	❌	❌	❌	❌	❌	❌
Logto	❌	✅	❌	❌	❌	❌	❌	❌	❌
Okta	✅	✅	❌	❌	❌	❌	❌	❌	❌
Pocket ID	❌	❌	❌	❌	❌	❌	❌	❌	❌
SimpleIdServer	✅	✅	❌	❌	❌	❌	❌	❌	✅
SuperTokens	❌	✅	❌	❌	❌	❌	❌	❌	❌
WSO2	✅	✅	❌	❌	❌	❌	❌	❌	❌
Zitadel	❌	✅	❌	❌	❌	❌	❌	❌	❌