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.

Want to see the full health, shipping, openness, and evidence details for every tool in Identity & Access Management? Browse all Identity & Access Management Tools →