SuperTokens Review (2026)
SuperTokens is an open-source authentication solution you can self-host. It handles email/password, social login, passwordless, MFA, and session management.
What You Get
- Email/password authentication
- Social login (Google, GitHub, Apple, etc.)
- Passwordless (magic links, OTP)
- Multi-factor authentication
- Session management with anti-CSRF
- Pre-built UI components
- Multi-tenancy support
- Self-hostable (Docker) or managed cloud
What I Like
1. Truly self-hostable. Run the SuperTokens core as a Docker container. Your data stays on your infrastructure. No MAU limits when self-hosted.
2. Apache 2.0 license. Use it commercially without restrictions. No AGPL concerns.
3. Override anything. Every API endpoint and behavior can be overridden. Need custom logic after signup? Override the signUp function.
4. Session management is excellent. Anti-CSRF tokens, token rotation, session revocation — all handled correctly out of the box.
5. Multi-tenancy. Built-in support for multi-tenant apps. Each tenant can have different auth methods.
What I Don't Like
1. UI is less polished than Clerk. The pre-built components work but don't look as good as Clerk's. You'll likely customize them.
2. Setup is more involved. Running the SuperTokens core + configuring your backend + frontend takes more time than Clerk's 5-minute setup.
3. Documentation can be overwhelming. There's a lot of it, which is good, but finding what you need can be challenging.
4. Organizations less mature. Clerk's organization features (org switcher, roles, invites) are more polished than SuperTokens' equivalent.
When to Use SuperTokens
✅ Self-hosting is required (compliance, data residency) ✅ Budget-sensitive at scale (no per-MAU charges) ✅ Need to customize auth deeply ✅ Multi-tenant SaaS
❌ Want fastest possible setup (use Clerk) ❌ Need polished organization features (use Clerk) ❌ Small team that doesn't want to manage infrastructure
Verdict
7/10. SuperTokens is the best open-source auth solution for teams that need self-hosting and customization. It's not as polished as Clerk, but it's free to self-host with no MAU limits. Choose SuperTokens when control and cost matter more than convenience.