⚡Stack Radar

Authentication Services · Reviewed 19 Oct 2026

ZITADEL

Open source identity platform for developers.

from $100 · free tier · zitadel.com ↗

Paid against free › Authentication Services › ZITADEL

SEO analysis

Collected Oct 19, 2026

zitadel.com: an estimated 64,594 total monthly visits and about 888 monthly organic visits across 266 ranking keywords. Scout crawled 15 pages and measured a technical health score of 92/100.

64.6KEstimated total trafficModeled monthly visits266Ranking keywordsPublic search sample92/100Technical health15 pages checked4.4KReferring domainsLive backlink summary

Overview

01

Summary

The useful answer before the supporting detail.

ZITADEL is an open source identity infrastructure platform for developers, providing identity management, secure authentication, and access management for customers, employees, devices, or services S4. It is used by developers and organizations to offload complex identity and access management tasks, enabling them to focus on core business logic S4. The platform offers a hosted, multi-factor secured login, single sign-on, and an event-based audit trail, with a free tier and self-hosting options S4 S14.

02

Product identity and positioning

Name, category, positioning, audience, and first-party claims.

  • Identity: ZITADEL, an open source identity infrastructure platform for developers S1 S4.
  • Core purpose: To provide identity management, secure authentication, and access management for customers, employees, devices, or services S4.
  • Intended users: Developers and organizations building B2B SaaS solutions or needing identity management S4.
  • Product scope: A platform offering hosted login, multi-factor authentication, single sign-on, delegated access management, and an event-based audit trail S4.
  • Positioning: Identity management as foundational infrastructure, available as open, extensible, and community-driven software S1.
  • Claimed distinction: Provides a hardened, extensible turnkey solution for all authentication and authorization needs S14.
03

Use cases and audiences

Who the product serves and the jobs it is designed to handle.

AudiencePractical use case
B2B SaaS providersBuild multi-tenant authentication and authorization for B2B applications S178 S4.
OrganizationsLet customers self-manage their organization's federation setup S4.
DevelopersIntegrate authentication into applications using APIs and SDKs S134 S31.
EnterprisesEnforce security policies and manage access for employees and partners S4.

Features

09

Features and capabilities

Core functions and evidence-backed product capabilities.

CapabilityWhat it does
Hosted login pageProvides a customizable, secure login and registration page for your projects S4.
Multi-factor authenticationSupports passwordless methods like fingerprint, security key, or WebAuthN, with no extra charge S4.
Single sign-on (SSO)Enables SSO via standard protocols such as OpenID Connect S4.
Delegated access managementAllows organizations to self-manage users, access rights, SSO options, and security policies S4.
Identity brokeringActs as a trusted intermediary to connect projects with external identity providers, allowing users to link multiple identities S4.
Event-based audit trailTracks changes to resources over time, providing a reviewable history S4.
API-first designExposes nearly all functions via APIs, enabling custom integrations and workflows S4.
Actions extensibilityAllows executing custom code on events to fit unique workflows S14 S22.
10

Integrations and ecosystem

Connected products, exports, APIs, and workflow compatibility.

Integration or interfaceTypeWhat it enables
OpenID Connect & OAuth 2.0Standard protocolEnables SSO and authentication for applications S4 S22.
SAML 2.0Standard protocolProvides SAML-based authentication S22.
gRPC and REST APIsAPIExposes all features for programmatic management S22.
SDKs for popular frameworksSDKProvides idiomatic integration for specific frameworks S31.
ActionsExtension frameworkAllows custom code execution on events S22.
Device authorization grantAPISupports authentication on limited-access devices like SmartTVs S22.
Service accountsAPIEnables machine-to-machine communication S22.

Pricing

11

Pricing and plans

Published plans, free access, trials, credits, and pricing limitations.

Plan or offerVerified price and billingIncludedLimits
FreeUS$0 per month, per instance S1100 daily active users S1Start for free S1
PaidUS$100 per month, per instance S125,000 DAU included S1Unlimited DAU S1

Competition

12

Alternative tools

Named from this report, then each website opened and checked before it is shown.

Auth0Secure AI Agent & User Authentication | Auth0Auth0 provides comprehensive developer-focused identity infrastructure with hosted login and SSO, but operates on a proprietary SaaS model with a different pricing tier.LogtoLogto: Modern auth infrastructure for developersLogto is an open-source identity solution tailored for developers featuring hosted sign-in and RBAC, focusing on modern cloud-native deployment with simpler pricing.

2 verified

13

Competitive landscape

Domains competing for the same organic search demand.

Sampled competitors

CompetitorFirst-page appearancesSampled queriesAverage positionQueries observed
oauth.net216opaque token vs jwt
community.auth0.com111opaque token vs jwt
upguard.com1122 factor authentication bypass
fusionauth.io112opaque token vs jwt
securityscorecard.com1132 factor authentication bypass
reddit.com113opaque token vs jwt
portswigger.net1142 factor authentication bypass
martinhongsw.medium.com114opaque token vs jwt
learn.microsoft.com1152 factor authentication bypass
hoxhunt.com1162 factor authentication bypass

Website intelligence — Collected evidence

Customers, testimonials, and first-party review claims

No supporting public-page evidence was collected for this category.

Independent review sources discovered

No links to supported independent review platforms were discovered on the collected pages.

15

AI visibility

Measured ChatGPT and Google AI mentions with cited sources.

AI-assistant referral traffic

  • Estimated current generative-AI referral share: 2.1%
MonthSource
—All AI assistants
—All AI assistants

Website intelligence — Collected evidence

Site-stated AI capabilities

Page typeEvidenceSource
technical](https://www.fiddler.ai/)[https://zitadel.com/

These are first-party product claims, not independent measurements of AI-search visibility.

16

Marketing opportunities

Actions calculated directly from the collected evidence.

OpportunityRecommended actionEvidence
Competitor gapReview the sampled queries where oauth.net appears.2 first-page appearances across opaque token vs jwt
Technical priorityMissing page titlehttps://meetings-eu1.hubspot.com/joshua-chae/zitadel-discovery-call

Website intelligence — Collected evidence

Website evidence gaps

  • customers: no usable public page was collected; verify whether the site publishes this evidence.
  • reviews: no usable public page was collected; verify whether the site publishes this evidence.
  • changes: no usable public page was collected; verify whether the site publishes this evidence.
  • identity: no usable public page was collected; verify whether the site publishes this evidence.

Trust and proof

17

Customers, proof, and reviews

Published proof, customer signals, and review evidence.

Independent reviews

PlatformPageHow it was foundNote
EuropeanStackZITADEL Review 2026 / EuropeanStackGrounded web searchZITADEL occupies a specific and well-defined niche: open-source identity infrastructure for B2B SaaS companies that need multi-tenancy by design, comprehensive audit logging ... Keycloak alike. The tradeoff is configuration depth — ZITADEL requires more
DoolpaZITADEL Review (2026) — Open-Source Auth0 and Keycloak Alternative / DoolpaGrounded web searchthat thread, GitHub Discussions, and r/selfhosted is that the same image runs on Cloud and on a ... without configuration drift. Developers also call out the docs and the Discord community — the team is genuinely responsive on issues
European PurposeZitadel Review 2026 - European Identity ManagementGrounded web searchfills an important gap in the European technology landscape. Its native multi-tenancy ... design, comprehensive protocol support, and Swiss data sovereignty make it a compelling choice for B2B SaaS companies, enterprises, and any organization that values

Customer proof

Proof typeNamed customer or sourceEvidence
Case studyBLP Digitalcustomer case study — - 70% Faster B2B Client Integration: The time required to set up and manage B2B client environments was reduced from 5 hours to just 1.5 hours. (Achieving 70% Faster B2B Integration in Document Automation at BLP Digital / ZITADEL)
Case studyChapati Systemscustomer case study — uses self-hosted instances of ZITADEL for centralized user and access management for both internal users and external customers ... (Built with ZITADEL: Improved User Experience and Security for Chapati Systems / ZITADEL)
Case studysmartivecustomer case study — smartive replaced the existing backend of the bin mobile app for the bin cooperative’s eLearning platform. (How smartive implemented a mobile app with ZITADEL for thousands of students / ZITADEL)

Independent mentions

  • Zitadel: The best of Auth0 and Keycloak combined / Hacker News — This seems very clean and handily beats keycloak there, at least. I am building an application that will be deployed into a closed network, and it has some requirements regarding auth and authz that would be time-consuming(not to mention error prone) to implement. I also foresee there being a good chance of the customer wanting to integrate it with their existing stuff, so instead of having a custom user management system as part of the application, I ended up using keycloak. So far, the experie
  • As a possible alternative, I've recently started using Zitadel... — As a possible alternative, I've recently started using Zitadel (https://zitadel.com/) which is a very full-fledged open source IDP, in active development. ... you want out of login, permissive license, good pl choice, easy to deploy, postgres-first.

External links were grounded in one live web search. Search snippets are leads, not independently scraped page content; rejected links remain available in Review evidence.

18

Company, security, and trust

Ownership, policies, security signals, and public trust evidence.

SignalFindingSource
Company and ownershipFounded in Switzerland by identity and infrastructure veterans, Zitadel emerged from a simple observation: enterprise identity management had become a barrier to innovation rather than an enabler. Our team combines decadsource
Contact and supportCustomers without a subscription can contact us via the official communication channels. The parties may enter a service level agreement, as specified in our Support Service Description, for booked Support Services. Onlysource
Legal and privacyTerms of service, privacy policy, and more.source
Security and complianceModern authentication methods, SSO and Social Loginssource
Uptime and status page99.5% uptime guaranteesource
Domain registered2017-03-23—
Domain expires2027-03-23—

Every trust signal above is backed by a collected page or a registration record.

19

Documentation and product updates

Help resources, product guidance, and visible changes over time.

Resource or updateTypeWhat is availableDate or freshness
ZITADEL Documentation / ZITADEL DocsDocumentationZITADEL is the "Identity Infrastructure for developers". We provide a hardened and extensible turnkey solution to address all your authentication and authorization needs. (source)Not dated
B2B Multi-Tenant Authentication with ZITADEL / ZITADEL DocsGuideGuides, comparisons, pricing breakdowns, use cases, and how-to articles. (source)Not dated
ZITADEL API Reference Overview / ZITADEL DocsAPI referenceCovers authentication, quick start, endpoints and payloads, rate limits and errors. (source)Not dated
Terms of Service Agreement / ZITADEL DocsDocumentationFramework agreement and terms of service for ZITADEL's websites and identity management services. (source)Not dated
Examples and SDKs for ZITADEL / ZITADEL DocsDocumentationIntegrate ZITADEL into your application using our SDKs, example repositories, and guides for popular frameworks. (source)Not dated
Actions / ZITADEL DocsGuideGuides, comparisons, pricing breakdowns, use cases, and how-to articles. (source)Not dated
Build your own Login UI / ZITADEL DocsGuideGuides, comparisons, pricing breakdowns, use cases, and how-to articles. (source)Not dated
The ZITADEL Quick Start Guide / ZITADEL DocsGuideGuides, comparisons, pricing breakdowns, use cases, and how-to articles. (source)Not dated

Not found in the collected public sources: public roadmap, changelog or release notes, status page, separate help center or knowledge base.

Technical

20

Technical and delivery signals

Delivery model, platforms, API, data ownership, reliability claims and release activity.

SignalFindingSource
Delivery model (cloud, self-hosted, desktop, browser extension)ZITADEL Cloud is a public cloud service, and self-hosted deployment is available S14.S14
Platforms and appsDeployable on Linux, macOS, Docker Compose, and Kubernetes S115.S115
API and extensibility (API, SDK, webhooks, MCP, plugins)Exposes all features via gRPC and REST APIs, provides SDKs, and supports Actions for custom code S22 S31.S22 S31
Data ownership and exportNot published on the collected pages.—
Performance and reliability claimsNot published on the collected pages.—
Release activityStable is the current production release, and latest is updated frequently S115.S115
21

Measured infrastructure

Domain, certificate, and hosting signals, measured directly.

SignalFinding
Domain registered2017-03-23 — Squarespace Domains II LLC
Domain expires2027-03-23
TLS certificateLet's Encrypt, valid, expires 2026-11-21
Security headersHSTS, CSP, X-Content-Type-Options, X-Frame-Options, Referrer-Policy
Server headerVercel
Mail handled byaspmx.l.google.com, alt1.aspmx.l.google.com
Nameserversns-cloud-b1.googledomains.com, ns-cloud-b3.googledomains.com

Not measurable: wayback: rate limited by archive.org, ladder stopped after 1 probe(s). A gap here means the lookup was unavailable, not that the finding is negative.

22

Technical site audit

A bounded multi-page crawl with page-level issues and URLs.

Scout — Bounded technical crawl

  • Pages crawled: 15 of 15 maximum
  • Technical health: 92/100
  • Critical issues: 1
  • Warnings: 19
  • Notices: 6

Issues

SeverityIssueValueAffected URL
warningMissing canonical URL—https://zitadel.com/next
warningMissing canonical URL—https://zitadel.com/pricing
warningMissing canonical URL—https://zitadel.com/blog
warningMissing meta description—https://zitadel.com/login
warningPage should have one primary H10https://zitadel.com/login
warningMissing canonical URL—https://zitadel.com/login
noticeLow visible word count0https://zitadel.com/login
warningMissing canonical URL—https://zitadel.com/register
noticeLow visible word count38https://zitadel.com/register
criticalMissing page title—https://meetings-eu1.hubspot.com/joshua-chae/zitadel-discovery-call
warningMissing meta description—https://meetings-eu1.hubspot.com/joshua-chae/zitadel-discovery-call
warningPage should have one primary H10https://meetings-eu1.hubspot.com/joshua-chae/zitadel-discovery-call
warningMissing canonical URL—https://meetings-eu1.hubspot.com/joshua-chae/zitadel-discovery-call
noticePage is marked noindex—https://meetings-eu1.hubspot.com/joshua-chae/zitadel-discovery-call
noticeLow visible word count0https://meetings-eu1.hubspot.com/joshua-chae/zitadel-discovery-call
noticeMeta description length should be reviewed175https://zitadel.com/docs/guides/integrate/login-ui
noticeLow visible word count109https://zitadel.com/docs/guides/integrate/login-ui
warningTitle length should be reviewed68https://zitadel.com/docs/guides/integrate/service-accounts/authenticate-service-accounts
warningDuplicate title in audit sample4https://zitadel.com/
warningDuplicate title in audit sample4https://zitadel.com/pricing
warningDuplicate title in audit sample4https://zitadel.com/blog
warningDuplicate title in audit sample4https://zitadel.com/register
warningDuplicate meta description in audit sample4https://zitadel.com/
warningDuplicate meta description in audit sample4https://zitadel.com/pricing
warningDuplicate meta description in audit sample4https://zitadel.com/blog
warningDuplicate meta description in audit sample4https://zitadel.com/register

Crawled pages

StatusTitleH1sWordsResponseURL
200ZITADEL - Identity Infrastructure, Simplified153181 mshttps://zitadel.com/
200Next Generation • ZITADEL \ZITADEL1659376 ms
200ZITADEL - Identity Infrastructure, Simplified1283140 mshttps://zitadel.com/pricing
200ZITADEL - Identity Infrastructure, Simplified1643668 mshttps://zitadel.com/blog
200Login with Zitadel00946 mshttps://zitadel.com/login
200ZITADEL - Identity Infrastructure, Simplified138535 mshttps://zitadel.com/register
200Missing title00618 mshttps://meetings-eu1.hubspot.com/joshua-chae/zitadel-discovery-call
200Build your own Login UI \ZITADEL Docs1109103 ms
200B2B Multi-Tenant Authentication with ZITADEL \ZITADEL Docs11170124 ms
200Actions \ZITADEL Docs175768 ms
200ZITADEL API Reference Overview \ZITADEL Docs1140670 ms
200ZITADEL Documentation \ZITADEL Docs141083 ms
200Deploy ZITADEL \ZITADEL Docs131760 ms
200Authenticate service accounts and client applications \ZITADEL Docs11316388 ms
200Examples and SDKs for ZITADEL \ZITADEL Docs11077334 ms

This is a bounded Scout crawl. Core Web Vitals and Lighthouse scores are not claimed unless a dedicated performance audit is connected.

23

Search Console and Analytics

First-party search and behavioral data connection state.

Modeled acquisition channels

ChannelEstimated share
direct33.6%
search52.5%
search organic52.5%
search paid0.0%
social2.4%
social organic2.4%
social paid0.0%
referrals8.5%
paid referrals0.3%
mail0.6%
gen ai2.1%
affiliate0.0%
other0.0%

First-party connections

IntegrationStatusData available after connection
Google Search ConsoleNot connectedClicks, impressions, CTR, average position, queries, pages, countries, and devices
Google AnalyticsNot connectedOrganic sessions, engagement, landing pages, conversions, geography, and devices

No first-party Search Console or Analytics numbers are shown until the site owner authorizes the corresponding Google account. Scout traffic model values above are modeled estimates, not private analytics totals.

Limits and method

24

Limitations and open questions

Known constraints and missing evidence from the collected pages.

The collected pages do not mention specific limitations or competitors. Evidence gaps include lack of customer reviews, detailed security certifications, uptime guarantees, and data export specifics.

25

Sources, method, and limitations

Evidence inventory, collection method, provider use, and constraints.

This report is based on 15 collected pages from zitadel.com, including the homepage, features, about, documentation, API reference, SDK examples, and deployment guides. Evidence was gathered via static and browser rendering rendering. External proof search was used but did not verify customer reviews or ratings. Pricing was verified from the pricing page on 2026-10-19. Limitations: no customer testimonials, independent reviews, or detailed security compliance data were collected.

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