Auth0 vs Firebase Authentication: Popular User Login Solutions
Both Auth0 and Firebase Auth are popular services that help developers add user login and signup to their websites. They handle tasks like storing user accounts safely, managing passwords, and letting users sign in with services like Google or Facebook. While Auth0 is known for being highly customizable and business-friendly, Firebase Auth is popular for being easier to set up and part of Google's larger Firebase platform.
Authentication & User Managementloginauthenticationuser managementsecuritysocial login
Detailed Comparison
Technical Analysis
featureComparison
Both packages provide authentication features, but auth0 has more advanced features like passwordless authentication, MFA, and customizable login pages. Firebase-auth is more focused on Firebase-specific features like phone number authentication and Google Sign-In.
typescriptSupport
Both packages have TypeScript definitions and are compatible with TypeScript projects.
browserCompatibility
Both packages are compatible with modern browsers, including Chrome, Firefox, Safari, and Edge.
dependencies
Auth0 has 14 dependencies, including react and react-dom. Firebase-auth has 10 dependencies, including @firebase/app and @firebase/component.
performance
Both packages are optimized for performance, but auth0 has more overhead due to its additional features.
Ecosystem Analysis
frameworkCompatibility
Both packages are compatible with popular frameworks like React, Angular, and Vue.js.
communityActivity
Firebase-auth has a more active community due to its connection to the Firebase ecosystem.
documentationQuality
Both packages have high-quality documentation, but auth0's documentation is more comprehensive.
maintenanceStatus
Both packages are actively maintained, with regular updates and bug fixes.
Performance Comparison
bundleSizeAnalysis
Firebase-auth has a smaller bundle size, making it a better choice for smaller applications.
runtimePerformance
Both packages have similar runtime performance, with auth0 being slightly slower due to its additional features.
loadingTime
Firebase-auth has a faster loading time due to its smaller bundle size.
memoryUsage
Both packages have similar memory usage, with auth0 using slightly more memory due to its additional features.
Code Examples
Auth0 Login Example
1import { WebAuth } from '@auth0/web-auth';
2const webAuth = new WebAuth({
3 domain: 'your-domain.auth0.com',
4 clientId: 'your-client-id',
5 redirectUri: 'http://localhost:3000/callback'
6});
7webAuth.authorize();This code creates an instance of the WebAuth class and uses it to authorize a user.
Firebase-auth Login Example
1import { getAuth, signInWithPopup, GoogleAuthProvider } from 'firebase/auth';
2const auth = getAuth();
3const provider = new GoogleAuthProvider();
4signInWithPopup(auth, provider).then((result) => {
5 console.log(result.user);
6}).catch((error) => {
7 console.log(error);
8});This code uses the Firebase-auth SDK to sign in a user with Google Sign-In.
Recommendation
Summary
Both packages are suitable for authentication, but auth0 is more suitable for complex authentication scenarios, while firebase-auth is better for Firebase-specific use cases.
Details
- Auth0 has more advanced features, but is more complex to set up.
- Firebase-auth is more lightweight and easier to set up, but has limited customization options.
Similar Packages
passport
90%
Simple and popular authentication middleware for Node.js. Supports many login methods like username/password, Google, Facebook, and more through plugins called 'strategies'.
It's a great alternative because it's very flexible, well-documented, and you can start small with just password login and add more login options later. It's perfect for beginners because there are tons of tutorials and examples available.
Authenticationclerk-js
90%
Complete user management and authentication solution. Includes pre-built login forms, user profiles, and admin tools that work right away without much setup.
Great modern alternative that's super easy to set up. Perfect for projects that need quick authentication setup with nice-looking UI components included.
Authenticationsupertokens-web-js
85%
Modern authentication solution that's easy to set up and customize. Includes features like login, signup, password reset, and session management out of the box.
Newer alternative that's gaining popularity because it's developer-friendly and has good documentation. It's like Auth0 but with more flexible pricing and you can host it yourself.
Authenticationkeycloak-js
80%
Open-source identity and access management solution. Provides login, registration, and user management features similar to Auth0, but you can host it yourself for free.
Good choice if you want a free, self-hosted alternative to Auth0. It has many of the same features but requires more setup time. Many companies use it because they want to keep user data on their own servers.
Authenticationmagic-sdk
70%
Passwordless authentication solution that lets users log in with just their email or phone number. No passwords needed, which makes it very user-friendly.
Good choice if you want something simpler than Auth0 or Firebase Auth. It's modern, secure, and users love not having to remember passwords.
Authentication
š Documentation - š Getting Started - š» API Reference - š¬ Feedback
Documentation
- Docs Site - explore our docs site and learn more about Auth0
Getting Started
Requirements
This library supports the following tooling versions:
- Node.js:
>=18
Installation
Using npm in your project directory run the following command:
npm install auth0
Configure the SDK
Authentication API Client
This client can be used to access Auth0's Authentication API.
import { AuthenticationClient } from 'auth0'; const auth0 = new AuthenticationClient({ domain: '{YOUR_TENANT_AND REGION}.auth0.com', clientId: '{OPTIONAL_CLIENT_ID}', clientSecret: '{OPTIONAL_CLIENT_SECRET}', });
See more examples.
Management API Client
The Auth0 Management API is meant to be used by back-end servers or trusted parties performing administrative tasks. Generally speaking, anything that can be done through the Auth0 dashboard (and more) can also be done through this API.
Initialize your client class with a client ID, client secret and a domain.
import { ManagementClient } from 'auth0'; var management = new ManagementClient({ domain: '{YOUR_TENANT_AND REGION}.auth0.com', clientId: '{YOUR_CLIENT_ID}', clientSecret: '{YOUR_CLIENT_SECRET}', });
Or, initialize your client class with an API v2 token and a domain.
import { ManagementClient } from 'auth0'; var management = new ManagementClient({ domain: '{YOUR_TENANT_AND REGION}.auth0.com', token: '{YOUR_API_V2_TOKEN}', });
See more examples.
API Reference
Feedback
Contributing
We appreciate feedback and contribution to this repo! Before you get started, please see the following:
Raise an issue
To provide feedback or report a bug, please raise an issue on our issue tracker.
Vulnerability Reporting
Please do not report security vulnerabilities on the public GitHub issue tracker. The Responsible Disclosure Program details the procedure for disclosing security issues.