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FusionAuth Reviews & Product Details

FusionAuth Overview

What is FusionAuth?

FusionAuth is a powerful customer identity and access management (CIAM) platform designed for developers, by developers. Headquartered in Denver, Colorado, FusionAuth was founded in 2016 to provide secure, scalable, and flexible authentication solutions for modern applications. Trusted by startups and Fortune 500 enterprises alike, FusionAuth supports organizations of all sizes across industries such as fintech, energy, retail, manufacturing, gaming, healthcare, and more. With an API-first architecture and on-premises, cloud, and hybrid deployment options, FusionAuth delivers the control and flexibility businesses need without unnecessary complexity. Unlike SaaS-only CIAM solutions that impose mocking and context switching on developers, FusionAuth is the only downloadable auth solution with a hybrid deployment model for diverse pipelines. Whether you want better user conversion into your app, your customers require advanced authentication features like SSO and MFA, or auth needs to align with broader transformation and security initiatives, FusionAuth delivers the performance and scalability of a single-tenant VIP suite. Developers can integrate FusionAuth in minutes using SDKs for every major programming language, enabling seamless authentication, registration, single sign-on (SSO), multi-factor authentication (MFA), social login, authorization, and more. FusionAuth solves the challenges of identity management by eliminating security risks, reducing development time, and offering complete control over user data. Whether you need to migrate millions of users, implement enterprise-grade authentication, or ensure compliance with stringent security standards, FusionAuth provides a seamless, customizable solution that grows with your business. With an industry-leading time-to-value, FusionAuth empowers developers to focus on building great products while ensuring a frictionless, secure user experience.

FusionAuth Details
Product Website
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Product Description

FusionAuth adds authentication, authorization, user management, reporting, analytics and much more in minutes not months.

How do you position yourself against your competitors?

FusionAuth is API-first, downloadable software that runs on any platform, in any environment.

FusionAuth Cloud offers you the convenience and flexibility of managed hosting that you can buy right from the AWS, Google Cloud, or Digital Ocean marketplaces. Our single-tenant solution means that your data is completely protected, and never shares infrastructure with any other customer.

Need even more security? Host FusionAuth yourself, on premises or even air-gapped. No other commercial CIAM solution offers more security and flexibility.


Seller Details
Company Website
Year Founded
2009
HQ Location
Broomfield, US
Twitter
@FusionAuth
1,939 Twitter followers
LinkedIn® Page
www.linkedin.com
54 employees on LinkedIn®
Description

Every application needs customer authentication, but building it demands specialized expertise. FusionAuth is the customer authentication and authorization platform that makes developers' lives awesome. You'll get all the features your app needs plus a customizable, scalable solution you can run on any computer, anywhere in the world.For technical leaders creating products for external users, FusionAuth tames the risk and complexity that comes with typical identity systems. With self-hosted or cloud options, extensive documentation, a free plan, and a no-hassle process, FusionAuth helps developers meet authentication feature and compliance requirements so they can focus on building their application.


Brian P.
BP
Overview Provided by:
Founder and co-CTO of FusionAuth (identity & access management) and CleanSpeak (profanity filtering & moderation)

Recent FusionAuth Reviews

Verified User
E
Verified UserSmall-Business (50 or fewer emp.)
4.0 out of 5
"Good documentation"
This is a great auth ecosystem, though it requires becoming familiar with their installation and setup configuration / documentation to get started.
Sicong L.
SL
Sicong L.Small-Business (50 or fewer emp.)
3.5 out of 5
"very easy to use"
The performance is really good and very ease to use
Aakanksha T.
AT
Aakanksha T.Enterprise (> 1000 emp.)
5.0 out of 5
"FusionAuth is a great solution for developers needing identity management system."
FusionAuth supports multiple authentication protocols (OAuth, OpenID Connect, SAML), making it versatile for various application needs.
Security Badge
This seller hasn't added their security information yet. Let them know that you'd like them to add it.
2 people requested security information

FusionAuth Media

FusionAuth Demo - User Management
Easily handle all of your users.
FusionAuth Demo - FusionAuth - Auth built for devs
Get FusionAuth up and running in minutes.
FusionAuth Demo - Easily connect and manage social logins
A few clicks connects Facebook, Google, Twitter, OpenID Connect and more.
FusionAuth Demo - Custom Theming
Fully customizable theming to look and feel how you want it.
FusionAuth Demo - Try FusionAuth Today
Download our Free Community Edition and get a free shirt!
Play FusionAuth Video
Play FusionAuth Video
Play FusionAuth Video
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Have you used FusionAuth before?
Yes

47 FusionAuth Reviews

4.6 out of 5
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47 FusionAuth Reviews
4.6 out of 5
47 FusionAuth Reviews
4.6 out of 5

FusionAuth Pros and Cons

How are these determined?Information
Pros and Cons are compiled from review feedback and grouped into themes to provide an easy-to-understand summary of user reviews.
Pros
Cons

Overall Review Sentiment for FusionAuthQuestion

Time to Implement
<1 day
>12 months
Return on Investment
<6 months
48+ months
Ease of Setup
0 (Difficult)
10 (Easy)
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Scott F.
SF
CEO, CTO, CFO, CMO, CSO
Small-Business(50 or fewer emp.)
More Options
Validated Reviewer
Verified Current User
Review source: Organic
What do you like best about FusionAuth?

Logically it makes sense. They also provide SDKs for frameworks like Angular. Their blog posts, AI Bot are all useful resources for figuring out OAuth and integrating their products. And, they continually improve these resources. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

The Angular SDK appears to prevent using FusionAuth in a way that seems that is supported by other OAuth compliant servers; e.g. OAuth. Specifically, for additional security, it seems as if the Angular SDK doesn't allow you to have the Authentication server (self-hosted or FusionAuth Cloud) deployed to the cloud and yet use it for local development. It seems like this should be allowed because of other OAuth servers support it and there are other mechanisms to prevent the CORS issues other than the headers the Angular SDK uses. Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

It's allowing me full control using a very capable Authentication Server for free. I host it in Digital Ocean via a Docker container for about $15/mo which is great. And, while learning about OAuth, I was able to explore the various GET and POST requests with JWT to explore the OAuth specification. Review collected by and hosted on G2.com.

Response from Brad McCarty of FusionAuth

Hey Scott! Thanks for taking the time to share your thoughts. I chatted with our devrel folks and they had some insight for me to pass along. First, it's worth noting that this isn't really a CORS issue, but rather an issue with how FusionAuth uses cookies While you can use localhost, it probably takes more setup than is ideal. We have a [caution] block in this section of our docs that explains a bit more.

Always happy to chat further. And of course the Community forums might have folks who have run into the same issue, but have found a creative way to solve it.

See how FusionAuth improved
DS
Director of DevOps
Small-Business(50 or fewer emp.)
More Options
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review
What do you like best about FusionAuth?

FusionAuth provides a Terraform provider which allows DevOps to support it along side all of our IaC. Their APIs also allow easy integration with scripts where necessary for importing, exporting, and managing all Dev, QA, and Production environments. Our Developers are enthusiastic about the level of documentation and the ease of integration and implementation. We've had excellent support from FusionAuth when needed. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

It would be helpful if FusionAuth supported vanity domains for each of our environments instead of only for each FusionAuth server. Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

They are providing authentication of users and applications within our application eco-system. Review collected by and hosted on G2.com.

Response from Brad McCarty of FusionAuth

Thanks for the feedback, Darrell. I'll pass on your vanity domain thoughts to the Product team. That's an interesting idea!

MW
Director Product Strategy
Mid-Market(51-1000 emp.)
More Options
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review
What do you like best about FusionAuth?

There are lots of IDPs out there. This one is focused for developers. APIs are at the forefront of their product. Easy to embed in your product. Also, the pricing is tailored to developers versus the big guys. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

It is not as well known as the larger players such as Entra or Okta. Their cloud model is not a multi-tenant model. Seems like they host individual systems on vms. Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

We are a SaaS app. We are looking for a platform that can handle identity management for our application Review collected by and hosted on G2.com.

Response from Brad McCarty of FusionAuth

Thanks for the review, Mitchell! I'd love to hear more about your thoughts on multi-tenant. As far as we're concerned, being single-tenant hosted means that you don't have to worry about problems with noisy neighbors, and it helps you avoid potential breaches when someone else causes a problem.

Hrayr M.
HM
Product Manager
Small-Business(50 or fewer emp.)
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review
What do you like best about FusionAuth?

Very easy to set up, and get running. We have a simple use case that most other products over-engineered. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

Nothing negative comes to mind. The setup was great, and support was very helpful getting us integrated Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

We have clients that need to use their existing SSO providers (Entra, Okta, etc) with our platform, and we would ned to authorize those users on our end. It has helped our clients feel secure and us to close deals. Review collected by and hosted on G2.com.

Verified User in Computer Software
AC
Small-Business(50 or fewer emp.)
More Options
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review
What do you like best about FusionAuth?

The community editon helped us to easily implement a powerful AuthX for our services. It also provides an API which makes integration very easy. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

The pricing model imposes some ties between the hosting plans and the license plans, for example you cannot use a community or a starter license on a high availability hosting, it has to be a more expensive one. So if a set of basic features suffice for your needs but you want high availability the only option is to self host. Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

It solves all of our authentications and authorization problems :) Review collected by and hosted on G2.com.

Response from Brad McCarty of FusionAuth

Thanks so much for the review. We're always looking at the best ways forward with pricing, and we'll definitely take your feedback into account.

MC
Small-Business(50 or fewer emp.)
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review
What do you like best about FusionAuth?

- Once you have done the initial configuration in your code base (setting the callback routes, handling the grant in your controller etc.) , everything else can be configured in the FusionAuth Dashboard. For example, adding new IdPs, themeing, hiding/showing fields etc. can all be done in a intuitive UI without needing to redploy your application.

- The FusionAuth Dashboard itself is (to me) much more straightforward and locigical compared with Auth0, which I have used in the past. They have some great features in there like "Lambdas" which trigger when certain actions happen, making it easy to hook into the signin flow dependant on which IdP you are using. It is very customizable, but also has some great default out-of-box settings.

- Pretty active developer support through a maintained GitHub Issues page, which feels like they are working alongside developers to build a product that their users want.

- All the support and advice during the kick-off meetings was very helpful. Sometimes those meetings can be sales-heavy, but we had a lot of engineers on the call offering great insights and advice. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

- Whilst the documentation is pretty good, getting started is a little overwheleming, mainly because of all the different ways that you can configure FusionAuth (self-install or cloud-based). A more streamlined "Getting Started" guide for SaaS based products using cloud-based instances would help to get up-to-speed quicker. I feel like the documentation is all there, but it is sometimes hard to find what you need due to the way it is organized.

- I love that you can really customize the theme of all the pages and emails. However the theme template engine that they use is a little bit cumbersome. Once you get the hang of it, it does the job fine, but there is a bit of trial-and-error required to get started with it. Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

- Enables us to quickly add support to any IdP that we need

- Comes with the ability to support SCIM which helps us to provide an enterprise login solution for our larger customers

- Gives us access to more advanced login features such passwordless login, biometric login, more MFA options, password breach checks etc. Review collected by and hosted on G2.com.

Todd C.
TC
VP, Technology
Mid-Market(51-1000 emp.)
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review
What do you like best about FusionAuth?

It provided a good replacement for Auth0 / Okta for our system as we have been priced out of their "base market". It respects all of the same industry standards and complies with all necessary pieces but provides a bit more configuration capabilties and their docs are more focused on the development community as opposed to market "fluff". Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

Very minor in terms of "dislike" but it requires a lot more configuration to "get going" as opposed to the higher priced options. A higher level executive / manager probably would be put off, but teams implementing loved the options. Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

It solves all of the usual problems of unified IAM and SSO (consistency, policy definition and enforcement, standards) at a reasonable price. We were not looking for price as the primary priority for our authentication system, but with the "top dogs" in Auth0 / Okta, it definitely factored it. The FusionAuth system and documentation helped make the transition of our live system seamless and hidden from the users. Review collected by and hosted on G2.com.

Charles-Éric J.
CJ
Software Developer
Mid-Market(51-1000 emp.)
Validated Reviewer
Verified Current User
Review source: Organic
(Original )Information
What do you like best about FusionAuth?

FusionAuth documentation is great. Authentication is a complex subject but you will quickly gain a good level of understanding of how to implement FusionAuth in your stack with the way their documentation is structured.

Their support is excellent. In fact, I think it's the best support we have accross all our third parties. Yes we pay for the 24/7 support, but the fact remains that they take the time to actually understand our issues and go over potential solutions with meaningful suggestions be it via chat or video calls.

FusionAuth API is robust and well made. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

The FusionAuth admin dashboard is not great for troubleshooting and monitoring users.

We needed to build a lot of internal tooling with their API to meet our needs. On the other hand, their product needs to be generic enough to cover most use cases and flexible enough (through their API) to cover more complex scenarios. However, I still feel like the dashboard could offer more information regading user sessions and user tracking (tokens issued, information added in these tokens, etc). Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

Operating an up-to-date, and reliable authentication system with low effort without sacrificing on security.

Our core business is not building an authentication service.

With FusionAuth, we save time and effort on complex auth infrasctructure that we can reinvest in core features for our customers. Review collected by and hosted on G2.com.

DB
Mid-Market(51-1000 emp.)
Validated Reviewer
Verified Current User
Review source: Seller invite
Incentivized Review
What do you like best about FusionAuth?

Having the option for FusionAuth to host our solution in a single-tenant format giving us total confidence in uptime and availability. Add to that integrating robust security features with easy, out-of-the-box solutions like MFA and SSO. Implementing was well supported and fairly straight-forward - on the essentials plan we had helpful support on the timeline we agreed to. In our migration of 10,000+ users they never missed a beat with the just-in-time migration option keeping our solution online throughout. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

There is a wide gap in support levels between the Enterprise and Essentials tiers of the service and we would have loved a more middling option with quicker guaranteed turnaround during business hours but not requiring 24/7 access to support. Otherwise our experience so far has been very positive. Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

Prior to FusionAuth we handled IAM in house and being able to confidently put it in the hands of professionals is exactly what we were looking for. Also being able to add included features like MFA and SSO has been huge, allowing us to continually deliver value to our users with very little lift on our engineering team. Review collected by and hosted on G2.com.

Aakanksha T.
AT
Software Engineer
Enterprise(> 1000 emp.)
More Options
Validated Reviewer
Review source: G2 invite
Incentivized Review
What do you like best about FusionAuth?

FusionAuth supports multiple authentication protocols (OAuth, OpenID Connect, SAML), making it versatile for various application needs. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

For those new to identity management, the range of features and configurations can feel overwhelming. A more streamlined onboarding process could help. Review collected by and hosted on G2.com.

What problems is FusionAuth solving and how is that benefiting you?

The ability to easily customize the login and registration interfaces allows developers to maintain their brand identity while providing a seamless user experience. Review collected by and hosted on G2.com.

Response from Brad McCarty of FusionAuth

Thanks for your kind words, Aakanksha! We're always looking at ways to improve our user experience. I'll pass your thoughts along to the Dev team.