Software Alternatives, Accelerators & Startups

FusionAuth

FusionAuth is a CIAM platform that is 100% free for unlimited users.

FusionAuth Reviews and details

Screenshots and images

  • FusionAuth Landing page
    Landing page //
    2023-02-10

Features & Specs

  1. Comprehensive Feature Set

    FusionAuth provides a wide range of authentication and authorization features including OAuth, SSO, MFA, social login, and user management.

  2. Developer Friendly

    FusionAuth offers extensive documentation, APIs, and SDKs that make it easy for developers to integrate and customize.

  3. Self-Hosted and SaaS Options

    FusionAuth can be deployed on-premises or accessed as a cloud service, providing flexibility based on organizational needs.

  4. Scalable

    FusionAuth is designed to handle millions of users, making it suitable for both small-scale and enterprise-grade applications.

  5. Good Community Support

    There is a vibrant community and responsive support team that can help with troubleshooting and advice.

  6. Free Tier

    FusionAuth offers a free version that includes a substantial set of features, which is beneficial for startups and small projects.

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Videos

Replicating StackOverflow login with FusionAuth

FusionAuth Demo

Social recommendations and mentions

We have tracked the following product recommendations or mentions on various public social media platforms and blogs. They can help you see what people think about FusionAuth and what they use it for.
  • Launch HN: Stack Auth (YC S24) – An Open-Source Auth0/Clerk Alternative
    As someone who came from Auth0 and god-awful Amazon Cognito, we've been using FusionAuth for years. Their APIs and SDKs have been amazing to work with. https://fusionauth.io It does what Auth0 does but significantly more cheaper and you can also self-host if you want. I built the Pulimi plugin for it which helps us easily configure it. If you don't use Terraform or Pulumi, they have this really cool kickstart... - Source: Hacker News / 9 months ago
  • Top 6 Open Source Identity and Access Management (IAM) Solutions For Enterprises
    FusionAuth is one of the most decorated and successful open-source IAM solutions. It has been downloaded by more than 10 million customers and hosts over 1 million digital identities. - Source: dev.to / about 1 year ago
  • Evolutive and robust password hashing using PBKDF2 in .NET
    Ideally, I would recommend not handling and storing passwords yourself. It is preferable to use an identity provider (IdP), such as Azure AD B2C, Auth0, or FusionAuth. These systems are designed to manage your users' identity (including their passwords) so you don't have to. You could also use Single Sign-On with cloud providers. - Source: dev.to / over 1 year ago
  • Ask HN: Who is hiring? (August 2023)
    FusionAuth | Senior Java Engineer, Senior TechOps Engineer, Senior Support Engineer | Full-time | Denver CO, USA | https://fusionauth.io FusionAuth is the authentication and authorization platform built for devs, by devs. Our software solves the problem of integrating essential user security without adding risk or distracting from the primary application. Ya know, the one with the features your users want to pay... - Source: Hacker News / over 1 year ago
  • SSO yet again - Authentik / Authelia / FusionAuth / Teleport / etc.
    But I rarely see a comprehensive comparison that is current for any of them. And then there are others out there like Teleport and FusionAuth. Source: almost 2 years ago
  • What Developers Need to Know About JWTs
    This article is based upon a presentation from Dan Moore of FusionAuth. - Source: dev.to / almost 2 years ago
  • Integrating FusionAuth with Python Flask: A Step-by-Step Guide
    FusionAuth is a powerful identity and access management platform that makes it easy to add authentication and authorization to your applications. In this blog post, we'll explore how to integrate FusionAuth with a Python Flask application using OAuth 2.0, covering features such as login, displaying user profile information, and logout functionality. - Source: dev.to / almost 2 years ago
  • Ask HN: Who is hiring? (April 2023)
    FusionAuth | Sr. Growth Marketing Manager | Full-time | Denver CO or Remote (in USA only) | https://fusionauth.io FusionAuth is the authentication and authorization platform built for devs, by devs. Our software solves the problem of integrating essential user security without adding risk or distracting from the primary application. Ya know, the one with the features your users want to pay you for. FusionAuth... - Source: Hacker News / about 2 years ago
  • Tech to demo for interview.
    Sorry, it wasn't Keycloak, it was FusionAuth I used. I think I looked at Keycloak but FusionAuth had better sample apps so I didn't have to spend as much time on the client side. FusionAuth isn't source, but has a free self hosted community edition. It was pretty easy to set up. Source: about 2 years ago
  • Protecting an ASP.NET API?
    Typical identity services would be Google, Microsoft, Facebook, etc. Then there are 3rd-party identity services, e.g. Auth0 and FusionAuth, and Identity Server. This allows you to authorize access to your application without having to manage user accounts aka identities. Source: about 2 years ago
  • The developer’s guide to IAM buzzwords
    Leading authentication services include: Auth0, AWS Cognito, SuperTokens, FusionAuth, Magic.link, Stych, Descope. - Source: dev.to / over 2 years ago
  • How do you handle auth?
    I use FusionAuth, it's not open-source but it's free for a lot of features and it's quite convenient. Source: over 2 years ago
  • Is there an IdentityServer4 fork ported to .NET 6?
    I did. We ended up using Keyloak. If you are based on PostgreSQL, https://fusionauth.io/ is also good. Source: almost 3 years ago
  • Is auth WAY too hard in .NET?
    There are good alternative such as https://fusionauth.io/ and https://www.keycloak.org/. Source: almost 3 years ago
  • Ask HN: Who is hiring? (July 2022)
    FusionAuth | Software Eng and more | Full-time | Denver CO or Remote (in USA only) | https://fusionauth.io FusionAuth is the authentication and authorization platform built for devs, by devs. Our software solves the problem of essential user security without adding risk or distracting from the primary application. You know, the one your users want to pay you for. For developers and technical leaders creating... - Source: Hacker News / almost 3 years ago
  • Why is authentication such a sh*t show with .NET 6?
    We use FusionAuth at my job, there's a free self hosted version. We found it way developer friendly than Azure B2C or Auth0. Very easy to customize. https://fusionauth.io/. Source: almost 3 years ago
  • Any resources of OAuth2 without using any packages/passport.js?
    I seriously considered passport but in the end switched to fusionAuth. Source: almost 3 years ago
  • Wondering how to implement SSO for multiple Azure ADs for my webapp
    Or you can use something like https://fusionauth.io/ if you want something out-of-the-box. Source: almost 3 years ago
  • OneLogin Outage
    FusionAuth - https://fusionauth.io/ For developers, by developers. - Source: Hacker News / about 3 years ago
  • Need anything related to adding login/signup to the webpage?
    If you dont want to do it yourself you could use a premade solution like Firebase Amazon Cognito Auth0 FusionAuth. Source: about 3 years ago
  • Caddy v2 with oauth2 OIDC protecting multiple subdomains?
    Might be overkill, but fusionauth will get you there. Source: about 3 years ago

External sources with reviews and comparisons of FusionAuth

10 Best Auth0 Alternatives and Similar Platforms
Like Auth0, FusionAuth is a powerful user management solution with a lot more to offer. Getting started and setting up FusionAuth takes no time because it is compatible with databases, such as Java and C#.
IAM: A comparison of open-source tools
/ Digitalberry news / IAM: A comparison of open-source toolsIAM: A comparison of open-source toolsWhy use an Identity Provider (IdP)?Comparative study of Identity Providers (IdP)1. Our team’s first choice: Keycloak2. In second place of our comparative study: Gluu3. Special mention: FusionAuthDiscover our expertiseContact our experts
Auth0 and FusionAuth: A Tale of Two Solutions
One of the biggest differences between Auth0 and FusionAuth is cost. FusionAuth is free for unlimited users. No strings, gimmicks, or tricks. No cost increases when you hit a certain Monthly Active User threshold. Much like a database or a web server, secure authentication is so essential that developers should be able to implement it quickly and easily without cost concerns. And unlike the free options from other...

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