Keycloak is an open-source Identity and Access Management solution aimed at modern applications and services.
Free and open-source
Best Pomerium Alternatives ranked by AI · updated Aug 2026
Pomerium is an identity-aware access proxy that applies user, device, and context-based policies to internal web applications and services. It is built for infrastructure and security teams that want zero-trust application access with open-source self-hosting or a managed option.
Top 6 Pomerium alternatives
Tailscale is a managed mesh VPN built on WireGuard for connecting devices, users, and services across private networks. It targets teams, developers,...
Pros
- Much easier to deploy and operate than Headscale
- Broader support for ACLs, device posture, subnet routers, and identity providers
- Reliable managed control plane with polished clients
Cons
- Paid team features cost more than self-hosted Headscale
- Requires trusting Tailscale with control-plane metadata
- Less suitable when fully independent infrastructure is mandatory
Free for personal use; paid plans from $6/user/mo
Authelia is an open-source authentication and authorization server for adding single sign-on and multi-factor authentication to applications behind reverse proxies. It is...
Pros
- Strong reverse-proxy integration for self-hosted services
- Includes two-factor authentication and granular access policies
- Lightweight compared with full identity platforms
Cons
- Requires self-hosting and operational maintenance
- Fewer enterprise directory and lifecycle features than Keycloak or Okta
- Less suitable for large multi-tenant identity deployments
Free, open source
ZITADEL is an open-source identity and access management platform for developers building customer-facing and workforce applications. It provides OAuth 2.0, OpenID Connect,...
Pros
- Open-source core with hosted and self-managed deployment options
- Strong multi-tenancy and organization features for B2B SaaS
- Supports OAuth, OIDC, SAML, passkeys, and passwordless authentication
Cons
- Smaller ecosystem and community than Auth0, Okta, or Keycloak
- Some advanced enterprise capabilities require higher-tier plans
- Less turnkey UI customization than developer-focused services such as Clerk
Free tier; paid plans from $100/mo
authentik is an open-source identity provider and access platform for SSO, MFA, directory integration, and application access. It targets self-hosters and organizations...
Pros
- More comprehensive administration UI and identity workflows than Authelia
- Supports SAML, OAuth2, OIDC, LDAP, and proxy-based application access
- Good Docker and Kubernetes deployment support
Cons
- Uses more resources and has greater configuration complexity than Authelia
- Can require more maintenance as integrations and policies grow
- Some enterprise support and features depend on commercial offerings
Free, open source; commercial support available
Identity-Aware Proxy is a Google Cloud service that controls access to applications and virtual machines using user identity and context instead of...
Pros
- Integrates directly with Google Cloud load balancers, App Engine, Compute Engine, and GKE
- Uses Google identities and context-aware access policies without requiring a traditional VPN
- Provides centralized authentication and authorization for web applications
Cons
- Best suited to Google Cloud workloads compared with platform-neutral alternatives
- Requires Google Cloud configuration and IAM expertise
- Application support is narrower than full network-access products such as Tailscale
No additional charge; Google Cloud usage charges apply
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