Auth0
Auth0 is an identity and access management platform, owned by Okta since 2021, that adds login, authentication and authorization to applications through prebuilt SDKs and APIs. It supports social login, single sign-on, multi-factor authentication and role-based access control for both consumer (B2C) and business (B2B) applications. As of September 2026 its free plan covers up to 25,000 monthly active users.
Facts checked on against the sources listed at the end of this page.
- Pricing
- FreemiumPaid from $35 a month for Essentials (up to 500 monthly active users)
- Open source
- NoProprietary
- GitHub stars
- 2,312+2 in the last 30 days
- npm downloads a week
- 1.1Mup 19% on the week before
- Latest release
- v4.33.05 days ago
- Releases in 90 days
- 9about 3 a month
A good fit for
- Adding login and authentication to an app without building an identity system from scratch
- B2B products that need per-customer organizations and single sign-on
- Teams that want prebuilt SDKs across many languages and frameworks
- Apps that need social login alongside enterprise identity providers
Not a good fit for
- Very high monthly active user counts on a budget, since paid plans price by MAU and can get expensive
- Teams that want a self-hosted, open source identity system
- Simple apps that only need basic email and password login without enterprise features
Auth0 pricing
Auth0 has a free plan for up to 25,000 monthly active users, then paid plans priced by monthly active users and feature tier: Essentials at $35 a month and Professional at $240 a month, both starting at 500 MAU, with custom Enterprise pricing above that.
| Plan | Price | What you get |
|---|---|---|
| Free | $0 a month | Up to 25,000 monthly active users, 1 custom domain, passwordless auth, unlimited social connections, 5 organizations, basic attack protection |
| Essentials | $35 a month | Up to 500 monthly active users, Pro MFA, role-based access control, 10 organizations, audit log streaming, separate environments |
| Professional | $240 a month | Up to 500 monthly active users, custom database connections, enterprise MFA, custom token exchange, enhanced attack protection |
| Enterprise | Custom pricing | Custom user tiers, 99.99% SLA, enterprise rate limits, white-glove support |
Prices in USD, checked on 27 September 2026. Current prices on auth0.com.
Main features
- Universal Login
- A hosted, customizable login page that supports social and enterprise identity providers.
- Multi-factor authentication
- Built-in MFA including push, SMS and one-time codes, with adaptive MFA on paid plans.
- Organizations
- Multi-tenant support for B2B apps, letting each business customer manage its own users.
- Actions
- Custom JavaScript code that runs during login, token issuance and other identity flows.
- Role-based access control
- Assign roles and permissions to control what signed-in users can access.
- Attack protection
- Brute force, bot and credential-stuffing detection, with enhanced protection on paid plans.
- Wide SDK support
- Official SDKs and quickstarts for web, mobile, single page and backend frameworks.
About Auth0
Auth0 is an identity and access management platform that developers add to applications to handle login, authentication and authorization instead of building it themselves. It offers Universal Login, social and enterprise connections, multi-factor authentication, and SDKs for many languages and frameworks.
The platform supports both consumer facing (B2C) and business facing (B2B) use cases, including organizations for multi-tenant apps, role-based access control, and Actions for adding custom logic to the login flow.
Okta acquired Auth0 in 2021. Auth0 continues to operate as a separate product line, marketed as Auth0 by Okta, alongside Okta's own workforce identity products.
- Made by
- Okta, Inc. (Auth0 by Okta)
- Launched
- 2013
- Free plan
- Yes: up to 25,000 monthly active users, 1 custom domain, passwordless auth, unlimited social connections, 5 organizations
- Available on
- Web apps, Single page apps, Mobile apps, APIs, Machine to machine
Usage and activity
Weekly npm downloads of @auth0/nextjs-auth0, last 12 months.
Recent releases
Auth0 alternatives
Auth0 compared
Auth0vsClerk
Clerk is a hosted authentication service with prebuilt UI components, billing by monthly retained users per app since February 2026, with a free tier covering 50,000 users.
Auth0vsOry
Ory is open source identity infrastructure, with components for authentication, authorization and OAuth2 and OIDC, that you can self-host for free or use through Ory Cloud.
Auth0vsWorkOS
Auth0 is an identity and access management platform owned by Okta that adds login, social sign-in, SSO and MFA for consumer and business apps, with a free plan up to 25,000 monthly active users.
Getting started
Sign up for a free Auth0 account and create a tenant.
Register an application in the Auth0 dashboard to get a domain, client ID and client secret.
Install an SDK for your framework.
npm install @auth0/auth0-reactWrap the app in Auth0Provider and call loginWithRedirect to start a login.
import { Auth0Provider, useAuth0 } from "@auth0/auth0-react"; function LoginButton() { const { loginWithRedirect } = useAuth0(); return <button onClick={() => loginWithRedirect()}>Log in</button>; }
Questions about Auth0
Is Auth0 free?
The free plan covers up to 25,000 monthly active users with core features like passwordless auth and social connections. Paid plans start at $35 a month for Essentials, based at 500 monthly active users, and add features like organizations and audit log streaming.
Is Auth0 open source?
No. Auth0 is a proprietary, hosted platform. There is no self-hosted or open source version.
Who owns Auth0?
Okta acquired Auth0 in 2021. It continues to operate as its own product line, marketed as Auth0 by Okta.
What is Auth0 used for?
It's used to add login, authentication and authorization to web, mobile and API applications, including single sign-on, multi-factor authentication and B2B organizations.
How is Auth0 priced?
Pricing is based on monthly active users and feature tier. The free plan covers up to 25,000 MAU with basic features; paid plans start at 500 MAU with more features, and enterprise pricing is custom.
Sources and links
Work on Auth0? Claim this listing. Something wrong or out of date? Suggest a correction. Stats come from the public GitHub and npm APIs and update every day.