Explore / Category guide
Authentication & Identity
Discover the top Authentication & Identity in 2026. Compare architecture, pricing tiers, performance benchmarks, and open-source developer alternatives.
Category overviewAbout Authentication & IdentityRead guideClose guide
Nineteen tools, all nineteen shown — small enough that this page can give you a recommendation rather than a survey. Most teams arriving here are deciding one thing: build login yourself on a library, rent it from a provider, or run an identity server you own. There is a fourth option people mistake for the first three, and it is worth separating before anything else.
Authentication answers "who is this". Authorization answers "may they do this to that". OpenFGA and SpiceDB on this page solve the second problem, not the first — both are relationship-based authorization systems, both Apache-2.0 or free open source, and neither carries a scored review yet (last verified 2026-07-07). If you already have working login and your problem is permission checks across resources, those two are your shelf; the rest of this page will not help you.
For authentication itself, the decision splits on who runs it and how the bill scales. Clerk (90, Clerk) is the highest-scored entry and appears in 6 of the 589 published comparisons — the most-argued-over tool here. Its review's claim is speed for React, Next.js and Expo teams, with pre-built components covering flows teams usually underinvest in. Hobby is free to 50,000 monthly active users per app, then $25/mo on Pro and $300/mo on Business. Auth0 (88, Auth0) is the mature protocol-breadth option: free to 25,000 monthly active users, Essential $35/mo, Professional $240/mo, with its review naming MAU pricing that scales with growth as the trade. WorkOS (84, WorkOS) has a different curve entirely — the first million active users are free, with additional millions at $2,500/mo and Enterprise SSO priced per connection — which makes it a B2B-shaped choice rather than a consumer-login one.
Self-hosting is genuinely competitive here, unlike in most categories. Keycloak (88, Keycloak) is free open source and feature-complete, with its verdict blunt about the cost: the operational burden makes hosted auth a better fit for teams without platform capacity. Authentik (87, Authentik) is the more approachable open-source option, free for the open-source edition and $5/user/month plus $0.02 per external user for Enterprise. Ory (85, Ory) is the most modular, free for developers with Ory Network Production at $770/year.
One correction to make on the page itself: Pangolin scores 90 but is not an identity provider. Its review describes a WireGuard-based remote-access option replacing separate VPN and reverse-proxy tools. Useful, but a different purchase.
11 of 19 tools (57.9%) are open source and 8 carry a scored review. Nothing is flagged as a graveyard record.
showing 19 of 19 tools
Drop-in authentication for modern JavaScript apps
Clerk is a complete authentication and user management platform for React, Next.js, and modern JavaScript frameworks. It provides pre-built UI for sign-in, sign-up, user profiles, organizations, MFA, passkeys, JWT sessions, webhooks, and billing. The Hobby plan supports up to 50,000 monthly retained users per app, with Pro, Business, and Enterprise tiers for growing teams.
Identity-aware VPN and reverse proxy for zero-trust remote access
Identity-based remote access platform built on WireGuard that combines reverse proxy and VPN capabilities. Pangolin supports clientless browser access for web apps and client-based private-resource access across macOS, iOS, Windows, Linux, and Android, with zero-trust rules, peer-to-peer tunnels, automatic SSL, SSO/OIDC options, and cloud or self-hosted deployment.
Enterprise identity platform by Okta
Enterprise-grade customer identity and access management (CIAM) platform by Okta providing universal authentication, passkeys, multi-tenant B2B SSO, and fine-grained authorization.
Open-source identity and access management
Keycloak is an open-source IAM solution with 25K+ GitHub stars by Red Hat. Provides SSO, social login, LDAP/Active Directory federation, standard protocol support (OIDC, OAuth 2.0, SAML), fine-grained authorization, user federation, and admin console. Features identity brokering, multi-tenancy via realms, and client adapters for Java, JavaScript, and Node.js. Self-hosted with no per-user licensing, making it ideal for organizations needing full control over identity infrastructure.
Open-source identity provider for self-hosted SSO and access management
Authentik is an open-source Identity Provider supporting SAML, OAuth2/OIDC, LDAP, RADIUS, and SCIM for self-hosted single sign-on. It provides customizable authentication flows, multi-factor authentication, user management, and proxy-based SSO for applications without native support. Positioned as a modern Keycloak alternative with 22K+ GitHub stars, free Open Source use, and paid Enterprise/Enterprise Plus plans.
Modular open-source identity infrastructure with Kratos, Hydra, and Keto
Ory provides a suite of modular open-source identity components: Kratos for user management and authentication, Hydra for OAuth2 and OIDC, Oathkeeper for API gateway authorization, and Keto for fine-grained permission management. Used by OpenAI and other major organizations. API-first design with Go-based microservices that deploy independently or together as Ory Network cloud.
Open-source authentication with self-hosting
SuperTokens is an open-source authentication solution with 14K+ GitHub stars providing email/password, passwordless, social login, MFA, session management, and user management. Designed for self-hosting with Docker — full control over user data with no vendor lock-in. Pre-built UI components for React, Vue, and vanilla JS. Backend SDKs for Node.js, Python, and Go. Managed cloud option also available. Emphasizes security with rotating refresh tokens and anti-CSRF protection by default.
Enterprise SSO and directory sync APIs for SaaS applications
WorkOS provides B2B identity infrastructure for SaaS teams that need AuthKit user management, Enterprise SSO, Directory Sync, Admin Portal, audit logs, RBAC/FGA, Radar, and MCP Auth without building every identity integration themselves. It is strongest when enterprise customers require SAML/OIDC, SCIM provisioning, and organization-level auth workflows.
TypeScript-native open-source auth library
Better Auth is an open-source TypeScript-native auth library with 10K+ GitHub stars providing a comprehensive, framework-agnostic solution. Features email/password, social OAuth, magic links, passkeys, 2FA, session management, and organization support. Works with Next.js, Nuxt, SvelteKit, Astro, and any Node.js framework. Database adapters for PostgreSQL, MySQL, SQLite, MongoDB, Drizzle, and Prisma. Zero vendor lock-in alternative to Clerk and Auth0.
Open-source IAM and SSO platform by Casbin
Casdoor is an open-source Identity and Access Management platform built by the Casbin community in Go and React. Supports OAuth 2.0, OIDC, SAML, CAS, LDAP, SCIM, WebAuthn, and MFA with a comprehensive web-based admin UI. Provides multi-tenant organization management, flexible RBAC and ABAC access control via Casbin models, and integrations with Google Workspace and Azure AD. Offers self-hosted deployment with optional managed cloud plans.
Drag-and-drop authentication flows with visual workflow builder
Descope is an authentication platform featuring a visual drag-and-drop flow builder for designing login and signup experiences. It supports passwordless authentication, social login, MFA, SAML SSO, and passkeys. Raised $53M Series A to build no-code identity workflows. SDKs for web, mobile, and backend with pre-built UI components that reduce auth implementation to minutes.
Self-hosted customer identity management with no per-user pricing
FusionAuth is a customer identity and access management platform that can be self-hosted or cloud-deployed with no per-user fees. It supports OAuth2, OIDC, SAML, passwordless login, social providers, MFA, and advanced threat detection. Features a drag-and-drop theme builder for login page customization and supports multi-tenant application architectures with unlimited users on the community edition.
Auth platform combining authentication, feature flags, and billing
Kinde is a developer-focused authentication platform that bundles user management, feature flags, and billing management into a single service. It provides social login, passwordless auth, MFA, RBAC, and organization management out of the box. SDKs available for Next.js, React, Node, Python, and other frameworks. Free tier supports up to 10,500 monthly active users.
Open-source auth infrastructure for modern apps
Logto is an open-source authentication and authorization platform built on OIDC and OAuth 2.1, serving as an alternative to Auth0, Cognito, and Firebase Auth. It provides pre-built sign-in flows with customizable UI, social login, Google One Tap, MFA, enterprise SSO via SAML, and role-based access control. SDKs cover 30+ frameworks including React, Next.js, Vue, Flutter, Go, and Python, with multi-tenancy support for SaaS applications.
Lightweight session management for TypeScript
Lucia is a lightweight open-source auth library for TypeScript providing session management primitives without abstracting the database layer. Gives developers core building blocks — session creation, validation, invalidation — while they own the schema and auth logic. Supports any database through a simple adapter. Works with Next.js, SvelteKit, Astro, Express, and Hono. For developers wanting full control over auth implementation with minimal overhead and zero vendor lock-in.
Fine-grained authorization engine by Okta
OpenFGA is an open-source authorization engine inspired by Google Zanzibar, built and maintained by Okta (Auth0). It provides relationship-based access control with a flexible modeling language, sub-millisecond permission checks, and SDKs for major languages. OpenFGA is used by companies including Grafana Labs, Canonical, and Docker for fine-grained access control in multi-tenant applications.
Google Zanzibar-inspired authorization database
SpiceDB is an open-source authorization database inspired by Google's Zanzibar system, providing relationship-based access control (ReBAC) at scale. It defines permissions through a schema language that models relationships between users, resources, and roles, then evaluates authorization checks in single-digit milliseconds. Used by companies like Netflix and GitHub, SpiceDB handles millions of permission checks per second.
Open-source identity management with built-in multi-tenancy
ZITADEL is an open-source identity and access management platform that handles authentication, authorization, and user management for B2B and B2C applications. It supports OIDC, SAML, OAuth 2.0, Passkeys, MFA, and passwordless login out of the box. Built with multi-tenancy as a core feature, ZITADEL lets you manage multiple organizations with delegated admin access, custom branding, and isolated identity stores—all from a single deployment.
OAuth 2.1 provider framework for Cloudflare Workers
workers-oauth-provider is Cloudflare's official OAuth provider library for Workers. It implements the provider side of the OAuth 2.1 protocol with PKCE support and RFC 8414 compliance. Handles token management automatically via Cloudflare KV storage. Gives fullstack teams a path to implement OAuth at the edge without heavy auth servers. TypeScript-native with npm package available.
Community tiers
A different perspective: rank the tools you know from S to D.
Sources & verification
Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.