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🔐 Identity & SSO

Single sign-on, OAuth, and identity providers you can self-host — open source alternatives to Okta, Auth0 and Azure AD.

Popular SaaS in this category

Tap any tool to see curated open source alternatives with honest strengths and weaknesses.

Alternatives to Okta

Enterprise identity, SSO, and MFA cloud.

4 alternatives

Open source projects in this category

Keycloak

Enterprise-grade identity and access management from Red Hat.

License: Apache-2.0 Self-host: ★★★★☆

Authentik

Modern identity provider with a polished admin UI.

License: MIT Self-host: ★★★☆☆

Authelia

Single sign-on portal designed for reverse proxies.

License: Apache-2.0 Self-host: ★★☆☆☆

Zitadel

Cloud-native identity platform built in Go with event sourcing.

License: Apache-2.0 Self-host: ★★★☆☆

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🛡 VPN & Private Networks

Encrypted tunnels and mesh VPNs on infrastructure you control — open source alternatives to NordVPN, ExpressVPN, and commercial mesh services.

📬 Transactional Email

Send password resets, receipts, and alerts from your own mail infra — open source alternatives to SendGrid, Mailgun, and Postmark.

📚 Wikis & Documentation

Team wikis, handbooks, and product docs you own — open source alternatives to Confluence, GitBook and Notion docs.

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