6 best Auth0 alternatives in 2026
6 alternatives compared, with sources and labelled product details.
Secure users, AI agents, and more with Auth0, an easy-to-implement, scalable, and adaptable authentication and authorization platform.
Best for: Organizations looking for a robust and scalable solution for user authentication and authorization.
Who should switch from Auth0, and to what
Auth0 was the default hosted auth for a decade, and the reasons teams look elsewhere are consistent: per-monthly-active-user pricing that jumps at the tier boundaries, enterprise features such as SSO gated behind expensive plans, and a developer experience that newer providers have overtaken. The alternatives split by what you are optimising for. Clerk for the best React and Next.js UI. Supabase Auth if you already run Postgres or Supabase, where auth is effectively free. WorkOS if you sell to enterprises and need SSO and directory sync priced per connection. Stytch for passwordless and B2B. Keycloak, FusionAuth or SuperTokens if you want to self-host and pay nothing per user.
The 6 alternatives, compared
| Alternative | Pricing | Free tier | Best for |
|---|---|---|---|
| Clerk | Free up to 10,000 monthly active users; Pro from about $25 per month plus per-user overage | Yes, 10,000 MAU | React and Next.js apps that want drop-in UI components |
| Supabase Auth | Included with Supabase; free tier, Pro from about $25 per month per project | Yes | Teams on Supabase or Postgres who want auth in the same database with row-level security |
| WorkOS | AuthKit free up to 1 million MAU; enterprise SSO priced per connection | Yes, up to 1M MAU | B2B SaaS that needs SSO, SCIM and audit logs to sell upmarket |
| Stytch | Free up to 10,000 MAU; B2B plans from about $599 per month | Yes, 10,000 MAU | Passwordless and B2B authentication with organisations built in |
| Keycloak | Free and open source to self-host | Self-hosted is free | Organisations that want full control, OIDC and SAML, and zero per-user cost |
| Kinde | Free up to 10,500 MAU; paid plans from about $25 per month | Yes | Early-stage products that want auth, billing and feature flags together |
Entry-plan list prices as published by each vendor, checked 2026-09-02. Prices and limits change; confirm on the vendor's pricing page before deciding.
Why people leave Auth0
- MAU-based pricing with steep jumps between tiers; growth that should be good news turns into a bill shock. (r/SaaS, r/webdev, Auth0 pricing threads)
- Enterprise SSO, SCIM and organisations sit in the most expensive plans, which is exactly what early B2B products need. (r/startups, Hacker News)
- Developer experience and UI customisation lag newer providers such as Clerk. (r/nextjs, r/reactjs)
- Ownership: teams want user records in their own database, which pushes them to Supabase Auth or self-hosted Keycloak. (r/Supabase, r/selfhosted)
Questions people ask
- What is the best free alternative to Auth0?
- Supabase Auth if you already use Supabase or Postgres: it is included and scales cheaply. WorkOS AuthKit is free up to one million monthly active users. Keycloak is free to self-host at any scale.
- Which Auth0 alternative is best for B2B SaaS?
- WorkOS if enterprise SSO and directory sync are the point, priced per connection so you can pass the cost to enterprise customers. Clerk and Stytch also offer organisations and SSO on their higher plans.
- Is Clerk cheaper than Auth0?
- At small scale, usually: Clerk's free tier covers 10,000 monthly active users. At around 100,000 MAU, Clerk costs roughly $1,000 per month while Supabase Auth would be a fraction of that, so compare at your expected scale.
- Can I self-host an Auth0 alternative?
- Yes. Keycloak, FusionAuth Community Edition and SuperTokens are self-hosted with no per-user charges. You trade the licence bill for operating an identity service yourself.
The listings below are the Auth0 alternatives in directree's catalogue, with every fact labelled Observed, AI-inferred or Founder-edited.