Top 40 Identity & Access Management Tools — May 2026

Identity and access management decisions are hard because the category mixes full IAM platforms, OIDC providers, access proxies, policy engines, password managers, and authenticator apps. The May 2026 ToolVitals dataset compares 40 tools using health score, shipping score, GitHub stars, ToolVitals score, and status so readers can separate actively maintained options from projects that may need closer review.

The ranking is ordered by ToolVitals score first, with GitHub stars used as a secondary popularity signal when scores are tied. That puts several high-shipping open-source IAM platforms at the top, while lower-scoring tools with weak or missing shipping signals fall toward the bottom even when they have name recognition or some GitHub interest.

Rankings

Rank	Tool	Health	Shipping	GitHub Stars	Score	Status
1	Keycloak	95	100	34231	94	🟢 Excellent
2	Zitadel	100	100	13708	94	🟢 Excellent
3	Stack Auth	92	100	6779	94	🟢 Excellent
4	Authorizer	90	100	1957	94	🟢 Excellent
5	Frontier	94	100	331	94	🟢 Excellent
6	Thunder	94	100	165	94	🟢 Excellent
7	Kotauth	86	100	50	92	🟢 Excellent
8	Seamless Auth	82	100	2	90	🟢 Excellent
9	BitWarden	97	80	18539	89	🟢 Excellent
10	Pocket ID	89	88	7741	89	🟢 Excellent
11	OPAL	89	88	5452	89	🟢 Excellent
12	Pomerium	89	88	4780	89	🟢 Excellent
13	AthenZ	86	88	987	87	🟢 Excellent
14	1Password	88	77	0	87	🟢 Excellent
15	FerrisKey	81	88	582	84	🟢 Excellent
16	Steward	81	88	3	84	🟢 Excellent
17	Cerbos	91	72	4394	82	🟢 Excellent
18	Weft ID	78	88	11	82	🟢 Excellent
19	VoidAuth	84	100	2087	78	🟢 Good
20	PearPass	82	72	430	78	🟢 Good
21	authenticator-tauri	74	62	1	69	🟢 Good
22	Kavachos	79	56	0	69	🟢 Good
23	Open Authenticator	76	55	74	67	🟢 Good
24	Ory Kratos	82	47	13621	66	🟢 Good
25	Jans	76	30	628	55	🟡 Fair
26	PowerAuth	73	30	61	54	🟡 Fair
27	OpenIG	46	47	88	46	🟡 Fair
28	ghost-auth	48	30	2	40	🟡 Fair
29	FusionAuth	71	0	241	39	🔴 Needs Attention
30	RootID	68	0	0	37	🔴 Needs Attention
31	Buwana	64	0	3	35	🔴 Needs Attention
32	HVT	61	0	3	34	🔴 Needs Attention
33	Tesseral	52	0	1124	29	🔴 Needs Attention
34	WAIS Core	52	0	1	29	🔴 Needs Attention
35	Authula	48	0	190	26	🔴 Needs Attention
36	Oso	46	0	3497	25	🔴 Needs Attention
37	EAuth	45	0	2	25	🔴 Needs Attention
38	nexeres	42	0	1	23	🔴 Needs Attention
39	SSOReady	36	0	1532	20	🔴 Needs Attention
40	authman-app	30	0	61	16	🔴 Needs Attention

Top 3 Highlights

Keycloak ranks first with a 94 ToolVitals score, 100 shipping score, 95 health score, and 34,231 GitHub stars. It ties several tools on ToolVitals score, but its much larger GitHub star count makes it the top-ranked option under the stated tie-breaker.

Zitadel ranks second with a 94 ToolVitals score and perfect 100 scores for both health and shipping. Its 13,708 GitHub stars give it the strongest popularity signal among the tools that also reached 100 health and 100 shipping.

Stack Auth ranks third with a 94 ToolVitals score, 100 shipping score, 92 health score, and 6,779 GitHub stars. Its description positions it as an open-source Auth0 or Clerk alternative, and the data shows both strong shipping activity and meaningful GitHub traction.

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