Best Auth & Identity (2026)
Ranked picks for auth & identity. No "it depends."
Supabase Auth
Free with Supabase. Good enough for most apps.
Full Rankings
Supabase Auth
Nice PickFree with Supabase. Good enough for most apps.
Pros
- +Free
- +Integrated with Supabase
- +Row-level security
- +Social logins
Cons
- -Less polished UI
- -Fewer features
- -Tied to Supabase
The security dance everyone hates but can't live without. Delegating access without sharing passwords, because trust is a token.
Pros
- +Eliminates password sharing for third-party apps
- +Standardized across major platforms like Google and Facebook
- +Granular scopes for fine-grained access control
Cons
- -Implementation complexity leads to frequent security flaws
- -Token management can be a debugging nightmare
The identity-as-a-service darling that makes auth easy until you hit the enterprise pricing wall.
Pros
- +Enterprise features
- +Many integrations
- +Mature
- +Customizable
- +Quick setup with pre-built login UIs and social logins
- +Handles complex protocols like OAuth 2.0 and SAML out-of-the-box
- +Scalable for startups to large applications with minimal dev effort
Cons
- -Complex
- -Expensive
- -Overkill for small apps
- -Pricing can skyrocket with user counts and advanced features
- -Customization beyond basics often requires wrestling with their rules engine
Authentication made easy, so you can stop worrying about passwords and start building actual features.
Pros
- +Beautiful UI components
- +Easy setup
- +Session management
- +Organizations
- +Pre-built UI components that look good out of the box
- +Handles complex security like MFA and social logins without the headache
- +Seamless integration with popular frameworks like Next.js and React
Cons
- -Pricier
- -Vendor lock-in
- -Less customizable
- -Can get pricey as your user base grows
- -Limited customization options for advanced use cases
The lazy developer's dream for user sign-ins—just add water and pray it scales.
Pros
- +Dead-simple setup with pre-built UI components
- +Handles social logins and phone auth without breaking a sweat
- +Tight integration with other Firebase services like Firestore and Cloud Functions
Cons
- -Vendor lock-in that makes switching away feel like a prison break
- -Pricing can sneak up on you with high-volume phone authentication
The identity glue that holds your SaaS sprawl together, if you can afford the sticker shock.
Pros
- +Seamless SSO integration with thousands of apps
- +Robust MFA and security policies out of the box
- +Great for managing user lifecycles in hybrid environments
Cons
- -Pricing can make CFOs weep
- -Admin console feels like navigating a maze
AWS's 'easy button' for full-stack apps that works great until you need to escape its walled garden.
Why we picked it
Amplify is the fastest path to auth for AWS-native apps, bundling Cognito, API Gateway, and S3 into a single CLI command. But the abstraction leaks hard — customizing the hosted UI or migrating off Amplify later requires a full rewrite. For teams already deep in AWS who want auth in 10 minutes, it works. For anyone else, Auth0 or Supabase Auth are more flexible and less painful to maintain.
→ Use it when you're building a full-stack app entirely on AWS and want auth set up in under an hour, accepting that you're locking into Cognito and Amplify's opinionated patterns.
Pros
- +Tight integration with AWS services like Cognito, AppSync, and S3 out of the box
- +CLI and UI that simplify deployment, hosting, and backend setup for React, Next.js, and other frameworks
- +Built-in CI/CD pipelines and environment management for rapid prototyping
- +Generous free tier for small projects and startups
Cons
- -Vendor lock-in: migrating away from Amplify often requires rewriting chunks of your backend
- -Limited customization for complex use cases—you'll hit walls if you need fine-grained control over infrastructure
Open-source Firebase alternative that actually lets you self-host without selling your soul to a cloud provider.
Why we picked it
Appwrite is the only serious open-source auth platform that gives you real self-hosting without a cloud lock-in. Its built-in email templates, OAuth providers, and team management beat Supabase's auth in out-of-box completeness, though it lags behind Auth0 in enterprise SSO depth. If you need to own your infrastructure and don't want to pay per-user pricing, this is the pick.
→ Pick it when you need a self-hosted auth solution with good defaults and don't want to pay per-user fees or deal with cloud vendor lock-in.
Pros
- +Fully open-source with self-hosting on Docker for complete control
- +Built-in authentication, databases, storage, and real-time features in one package
- +RESTful and GraphQL APIs with auto-generated SDKs for multiple languages
- +No vendor lock-in—migrate away anytime without rewriting your app
Cons
- -Self-hosting requires DevOps skills and ongoing maintenance
- -Less polished UI and documentation compared to commercial giants like Firebase
- -Community support can be slower than paid enterprise options
The Swiss Army knife of IAM—if you don't mind sharpening it yourself.
Why we picked it
Keycloak is the only open-source IAM platform that gives you SSO, social login, MFA, and user federation out of the box without per-user pricing. Its closest competitor, Auth0, charges per active user and locks advanced features behind enterprise tiers. Keycloak requires self-hosting and manual upgrades, but for teams that can handle that, it beats every paid alternative on cost and control.
→ Pick it when you need a self-hosted, standards-compliant identity provider (OIDC, SAML, LDAP) and you have the ops chops to manage a Java-based server.
Pros
- +Open-source with robust SSO and OAuth 2.0/OpenID Connect support
- +Built-in user federation and social login integrations
- +Fine-grained authorization policies for complex access control
Cons
- -Steep learning curve for advanced configurations
- -Can be resource-heavy and tricky to scale in production
Head-to-head comparisons
Missing a tool?
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