Software Alternatives, Accelerators & Startups

Auth.js VS Supabase

Compare Auth.js VS Supabase and see what are their differences

Auth.js logo Auth.js

Authentication for the Web.

Supabase logo Supabase

An open source Firebase alternative
  • Auth.js Landing page
    Landing page //
    2024-05-30
  • Supabase Landing page
    Landing page //
    2023-05-27

Auth.js features and specs

  • Ease of Integration
    Auth.js is designed to be easily integrable into modern web applications, allowing developers to quickly add authentication features without significant overhead.
  • Extensive Provider Support
    The library supports a wide range of authentication providers and strategies, making it flexible for various use cases.
  • Open Source
    Being open source, Auth.js allows developers to inspect, contribute to, and customize the code to suit their needs.
  • Community and Documentation
    Auth.js has a supportive community and well-maintained documentation, which can help developers troubleshoot issues and learn to use the library effectively.
  • Security Best Practices
    The library follows modern security best practices, ensuring that authentication processes are protected against common vulnerabilities.

Possible disadvantages of Auth.js

  • Dependency Management
    Relying on third-party libraries like Auth.js can introduce dependency management challenges, especially with updates and security patches.
  • Abstraction Complexity
    While the abstraction provided by Auth.js simplifies implementation, it may reduce the flexibility for developers who need low-level access to customize authentication processes deeply.
  • Learning Curve
    For developers unfamiliar with authentication concepts or modern JavaScript frameworks, there may be a learning curve to effectively utilize Auth.js.
  • Performance Overhead
    Integrating an additional library like Auth.js may introduce some performance overhead, which could be a concern for applications with stringent performance requirements.
  • Limited Offline Support
    Auth.js is primarily designed for online authentication flows, which may not be ideal for applications requiring robust offline support.

Supabase features and specs

  • Real-time capabilities
    Supabase offers real-time database features that allow you to subscribe to database changes and sync data with your frontend seamlessly.
  • PostgreSQL foundation
    Supabase is built on PostgreSQL, a robust, mature, and highly extensible SQL database, providing strong data integrity and reliability.
  • Open-source
    Supabase is open-source, which means you can inspect, modify, and contribute to the source code. This fosters community engagement and transparency.
  • Ease of use
    Supabase provides an intuitive dashboard and auto-generated APIs, making it easy for developers to manage databases without extensive backend knowledge.
  • Authentication and Authorization
    Supabase includes pre-built authentication and authorization modules, supporting various sign-in methods like email, OAuth, and more, simplifying user management.
  • Scalability
    Supabase is designed to scale with your application, offering plans that can handle from small to large-scale traffic and data operations.

Possible disadvantages of Supabase

  • New and evolving
    As a relatively new platform, Supabase is still evolving, which means it might lack some features found in more mature solutions and could have occasional bugs or stability issues.
  • Limited integration
    Currently, Supabase has fewer third-party integrations compared to other established backend-as-a-service (BaaS) providers, which might limit its utility in diverse tech stacks.
  • Learning curve
    Despite its user-friendly interface, there could be a learning curve for those unfamiliar with PostgreSQL or real-time database concepts.
  • Pricing for advanced features
    While Supabase offers a free tier, advanced features, and higher usage plans come with a cost. This might be limiting for startups or hobby projects with tight budgets.
  • Limited geographic presence
    Supabase's infrastructure might have limited geographic data centers compared to larger cloud providers, potentially affecting latency and performance for users in certain regions.

Auth.js videos

Clerk vs Next-Auth.js | It's not that simple...

Supabase videos

Basic demo

More videos:

  • Review - Supabase in 100 Seconds by Fireship

Category Popularity

0-100% (relative to Auth.js and Supabase)
Developer Tools
3 3%
97% 97
Authentication
100 100%
0% 0
Realtime Backend / API
0 0%
100% 100
Identity Provider
100 100%
0% 0

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Auth.js and Supabase

Auth.js Reviews

We have no reviews of Auth.js yet.
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Supabase Reviews

10 Top Firebase Alternatives to Ignite Your Development in 2024
Supabase makes it incredibly easy to migrate from Firebase. Its data structure and APIs are designed to feel familiar, so you can switch without a major learning curve. Plus, the open-source nature means you have complete control over your code and data.
Source: genezio.com
Top 7 Firebase Alternatives for App Development in 2024
Community Support and Longevity: Investigate the size and activity of the platform's community. A larger, more active community can provide better support and resources. Platforms like Parse and Supabase have strong community support.
Source: signoz.io
5 Best Vercel Alternatives for Next.js & App Router
Supabase distinguishes itself through its focus on data and community-driven development. Self-hosting capabilities allow you to deploy Supabase's suite of products within your own infrastructure. This maintains data ownership while still leveraging Supabase's tools.
Source: il.ly
Best Serverless Backend Tools of 2023: Pros & Cons, Features & Code Examples
Create an account, a project, and a database. Unlike a NoSQL database like Firebase’s, you need to have a structure ready to be able to manipulate data. But once this step is done―and you’ll have ready-to-use templates to help speed up this part―you can call Supabase like so:
Source: www.rowy.io
2023 Firebase Alternatives: Top 10 Open-Source & Free
Supabase is another trusted platform in our list that calls itself an open-source alternative to Firebase. You can also name it one of the newest cloud service providers similar to Firebase because it launched in 2020. Indeed, with great scalability and documentation support, Supabase could be an ideal option.

Social recommendations and mentions

Based on our record, Supabase seems to be a lot more popular than Auth.js. While we know about 501 links to Supabase, we've tracked only 27 mentions of Auth.js. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Auth.js mentions (27)

  • Top 5 Open Source Identity and Access Management (IAM) providers 2025
    Home page | GitHub Repo | Documentation | Discord community. - Source: dev.to / about 1 month ago
  • Next.js and Next-Auth V5: Guide to Social Logins(OAuth)
    Auth.js is an open-source authentication library that integrates with modern JavaScript frameworks like Next.js, Svelte, and Express. Previously the project was available only for Next.js and thus it used to be called Next-Auth. Today, a portion of Auth.js is still supports Next-Auth, but along with it, there are SvelteKitAuth, and ExpressAuth available too. - Source: dev.to / 4 months ago
  • Real-Time Authorization in a Chat Application with Permit.io and WebSockets
    We’ll be using Auth.js, an authentication library originally built for Next.js. Run the following command to install the package:. - Source: dev.to / 4 months ago
  • Simple Next.js Magic Link JWT Authentication with Prisma, PostgreSQL, and Resend
    When building web applications, authentication is almost always a core requirement. I needed something simple and secure that would let me get started quickly on new projects without over-complicating the setup. My goal was to have a solution that's easy to implement, handles email verification out of the box, and just works. In this post, I'm sharing how to build a straightforward magic link authentication system... - Source: dev.to / 7 months ago
  • Building a Personal Finance App with Arcjet
    This article will serve as a guide on how to create a simple finance management app using Arcjet, Next.js, Auth.js, Prisma, SQLite, and Tailwind CSS. Building a personal finance management app with modern web development skills, practical functionality, and robust security helps drive home the point of how effective it can be to incorporate these features. Our application will be proof of concept, so there will be... - Source: dev.to / 8 months ago
View more

Supabase mentions (501)

  • Why devs are quitting aws and what they’re choosing instead
    Platforms like Railway, Render, Fly.io, Vercel, Supabase, and Cloudflare are leading the charge with a shared philosophy:. - Source: dev.to / about 15 hours ago
  • I analyzed how Supabase and Laravel launched. Here's what I learned.
    Supabase is an open-source alternative to Firebase. They turned fast shipping into a format: launch weeks — announcing something new every day. They were first and initiated a movement. Picture this: according to launchweek.dev, there were 126 launch weeks run by 94 different companies in 2024. - Source: dev.to / about 2 months ago
  • Why You Shouldn’t Invest In Vector Databases?
    In fact, even in the absence of these commercial databases, users can effortlessly install PostgreSQL and leverage its built-in pgvector functionality for vector search. PostgreSQL stands as the benchmark in the realm of open-source databases, offering comprehensive support across various domains of database management. It excels in transaction processing (e.g., CockroachDB), online analytics (e.g., DuckDB),... - Source: dev.to / 16 days ago
  • How to Host a Scalable Full-Stack App for Free Using Cloudflare Pages, Workers, and Supabase
    Create an account at Supabase and create a new project. You’ll get:. - Source: dev.to / 18 days ago
  • Supabase WordPress Integration - SupaWP Plugin
    Supabase provides a robust authentication system supporting email/password, OAuth providers, and magic links. Integrating this with WordPress allows you to leverage Supabase’s secure and scalable auth backend to manage user registration and login seamlessly. - Source: dev.to / 21 days ago
View more

What are some alternatives?

When comparing Auth.js and Supabase, you can also consider the following products

Next.js - A small framework for server-rendered universal JavaScript apps

Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.

Resend - Email for developers

Clerk Authentication - Clerk is a complete suite of embeddable UIs, flexible APIs, and admin dashboards to authenticate and manage your users.

AppWrite - Appwrite provides web and mobile developers with a set of easy-to-use and integrate REST APIs to manage their core backend needs.

Auth0 - Auth0 is a program for people to get authentication and authorization services for their own business use.