Find Open-Source Alternatives
Discover powerful open-source replacements for popular commercial software. Save on costs, gain transparency, and join a community of developers.
Discover powerful open-source replacements for popular commercial software. Save on costs, gain transparency, and join a community of developers.
Compare community-driven replacements for WorkOS in identity & sso workflows. We curate active, self-hostable options with transparent licensing so you can evaluate the right fit quickly.
Run on infrastructure you control
Recent commits in the last 6 months
MIT, Apache, and similar licenses
Counts reflect projects currently indexed as alternatives to WorkOS.
These projects match the most common migration paths for teams replacing WorkOS.
Why teams pick it
Organizations needing SSO and 2FA for self-hosted applications behind reverse proxies
Why teams pick it
Keep customer data in-house with privacy-focused tooling.
Authentication and authorization server with SSO and 2FA
Why teams choose it
Watch for
Still under active development with potential breaking changes between versions
Migration highlight
Securing self-hosted applications with SSO
Users authenticate once through Authelia's portal and gain access to multiple internal applications with consistent 2FA enforcement across all services.
Fast, developer-friendly authentication with built-in dashboard and RBAC
Unified SSO gateway for Nginx using OAuth and OIDC
Multi‑tenant identity platform delivering secure, self‑service authentication.
Open-source Identity Provider for modern SSO and authentication
Open Source Identity and Access Management for Modern Applications
API‑first identity server for secure, scalable user management
Spec-compliant Python library for OAuth and OpenID Connect
Self‑hosted authentication platform delivering secure login and sessions.
Simple, secure identity management platform with everything built-in
Federated OpenID Connect identity service with pluggable connectors
Comprehensive authentication and authorization library for TypeScript
Modern auth infrastructure for SaaS and AI apps
Enterprise Single Sign-On and Identity Provider for Web
Add SAML and SCIM to any app in minutes
Privacy-first, framework-agnostic authentication and user management platform
UI-first IAM and SSO platform with comprehensive protocol support
Scalable API‑first auth platform for B2B SaaS
Teams replacing WorkOS in identity & sso workflows typically weigh self-hosting needs, integration coverage, and licensing obligations.
Tip: shortlist one hosted and one self-hosted option so stakeholders can compare trade-offs before migrating away from WorkOS.
Why teams choose it
Watch for
Primarily targets JavaScript/Node ecosystems
Migration highlight
SaaS product launch
Launches with instant sign-up, email verification, and passwordless login, reducing time-to-market.
Why teams choose it
Watch for
Requires Nginx with auth_request module
Migration highlight
Protect multiple microservices behind a single domain
Users authenticate once via Google and gain access to all services without re‑login.
Why teams choose it
Watch for
Requires PostgreSQL (v14+) as an external dependency
Migration highlight
Secure React SPA with OIDC PKCE
Implement OpenID Connect Authorization Code flow with PKCE, enabling seamless login and token handling using ZITADEL’s OIDC endpoints.
Why teams choose it
Watch for
Self-hosting requires infrastructure management and maintenance overhead
Migration highlight
Enterprise IdP Migration
Replace Okta or Auth0 with self-hosted authentik, reducing licensing costs while maintaining SAML and OIDC integrations across all applications
Why teams choose it
Watch for
Java-based stack may require JVM expertise for customization
Migration highlight
Multi-Application SSO
Users authenticate once and access multiple internal applications without re-entering credentials, improving security and user experience.
Why teams choose it
Watch for
Self‑hosting requires operational expertise
Migration highlight
Passwordless login for mobile app
Reduces friction for users while enhancing security through WebAuthn.
Why teams choose it
Watch for
Deprecating authlib.jose module in favor of separate joserfc library requires migration
Migration highlight
Multi-Tenant SaaS Authorization Server
Deploy a compliant OAuth 2.0 provider with PKCE, token introspection, and dynamic client registration for enterprise customers
Why teams choose it
Watch for
Requires self‑hosting and operational overhead
Migration highlight
Passwordless login for a mobile app
Users sign in via email link or SMS, reducing friction and improving conversion.
Why teams choose it
Watch for
Primary administration via CLI; WebUI focused on user self-service, not admin tasks
Migration highlight
Replace FreeIPA for Linux/Unix Identity
Faster performance, simpler upgrades, and integrated passkey authentication without Kerberos complexity
Why teams choose it
Watch for
Connector limitations can prevent refresh tokens or group claims depending on upstream protocol
Migration highlight
Kubernetes Cluster Authentication
Users log in to Kubernetes via GitHub or Active Directory; kubectl and dashboard authenticate through dex-issued ID Tokens without managing multiple credential systems.
Why teams choose it
Watch for
TypeScript-only focus may not suit polyglot development environments
Migration highlight
Multi-Tenant SaaS Platform
Deploy isolated authentication per tenant with role-based access control using built-in plugins, eliminating weeks of custom development.
Why teams choose it
Watch for
MPL-2.0 license requires disclosure of modifications to Logto source files
Migration highlight
Multi-tenant B2B SaaS authentication
Deploy organization-based access control with SSO, RBAC, and member provisioning in days instead of months
Why teams choose it
Watch for
Java-based deployment requires JVM expertise and infrastructure
Migration highlight
University Campus SSO
Students and faculty authenticate once to access learning management systems, email, library resources, and administrative portals using LDAP credentials with MFA enforcement.
Why teams choose it
Watch for
Enterprise features require a paid plan
Migration highlight
Add SSO button to SaaS dashboard
Users can sign in via their corporate IdP with two lines of code.
Why teams choose it
Watch for
AGPL-3.0 license may restrict commercial use without a separate license
Migration highlight
Passwordless login for a SaaS dashboard
Users authenticate via WebAuthn passkeys, eliminating passwords and reducing phishing risk.
Why teams choose it
Watch for
Self-hosted deployment requires infrastructure management and maintenance
Migration highlight
Multi-Application SSO for SaaS Platform
Users authenticate once and access multiple internal applications seamlessly using OAuth 2.0 or OIDC, reducing password fatigue and improving security.
Why teams choose it
Watch for
Self‑hosting requires own cloud resources and ops
Migration highlight
Enterprise customer onboarding
Admins invite users, configure SSO and enforce MFA from a self‑service console.