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111 reviews
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    Travis D.

Nice product

  • May 29, 2025
  • Review provided by G2

What do you like best about the product?
Cost. Dollar for dollar FusionAuth is comparable to Ping and Auth0 and a fraction of the price. Feature parity is on par with those providers, along with reporting. The interface is easy for a new user and the API's provide enough details for most SIEMs.
What do you dislike about the product?
Lack of out of the box and go. The Core system is easy to implement, and integrating with existing applications is not hard. BUT you have to build out your user experience with it. I don't remember any templates there for this task.
What problems is the product solving and how is that benefiting you?
Standardize Authentication


    Anthony D.

Easy to integrate, but very powerful!

  • May 29, 2025
  • Review provided by G2

What do you like best about the product?
FusionAuth makes it easy to add safe and secure auth in a way where I don't have to worry about the pitfalls of writing our own security. I especially like how all the edge cases are considered, and "nice to have" features such as rate limiting, CAPTCHA, and social login in is just a single click to enable. It has thorough API documentation that makes it easy to implement as well as several client libraries for all the platforms we used. Support has been excellent and helped us with many problems. I love that it can be self hosted, so we can set up systems locally for development and testing.
What do you dislike about the product?
FusionAuth lacks documentation on the client libraries, although thankfully they're mostly wrappers of the API so documentation can be gleamed. FusionAuth also has a gap between "easy" things and "difficult" things. Ie, once you need a single feature beyond what a Simple Theme can provide, it requires converting the whole thing to advanced themes.

Support is not very active in the development, as evidenced by the number of open issues on Github which haven't been addressed in years.
What problems is the product solving and how is that benefiting you?
FusionAuth allows us to break free from our tech debt of self-rolled auth, and in the process allows us to have modern features such as MFA and social login that would have taken a lot of dev work to make. FusionAuth also lets us have one sign-on platform for all of our products, instead of previously requiring many accounts to accomplish the same task.

Most importantly, FusionAuth allows us to not worry about security (including the continual maintenance of our auth) and instead focus on other business objectives.


    Aaron D.

Excellent service and technical support during investigative phase

  • May 29, 2025
  • Review provided by G2

What do you like best about the product?
The hands-on help we received from their staff
What do you dislike about the product?
High entry point in terms of price - problematic for experimenting with new approaches
What problems is the product solving and how is that benefiting you?
Authentication into multiple products using multiple SSO options


    Satyam G.

Fusion Auth Is Awesome

  • May 27, 2025
  • Review provided by G2

What do you like best about the product?
I like the fact it can be integrated with any codebase. I had created my sso completely open source.
Its secure when you create sso it makes the cookie http only this way only your backend server can read it
What do you dislike about the product?
Even they provide customize theme for enterprise plan but there should be more preinstall ui the current one is just two tiny small boxes
What problems is the product solving and how is that benefiting you?
Fusion auth handles authentication across platforms and website that has different subdomain but same domin I've tried


    Gayuru G.

Great Auth Service - Super Reliable and Great Service!

  • May 25, 2025
  • Review provided by G2

What do you like best about the product?
The doco is very comprehensive + Reliability is great, and the support has been super responsive to our queries.
What do you dislike about the product?
There were couple of minor hiccups with an incident but at the end it was handled well by the team and monitors were put in place
What problems is the product solving and how is that benefiting you?
It replaced our old auth system and we got so many new benefits like MFA and SSO


    Computer & Network Security

It's a game changer

  • May 22, 2025
  • Review provided by G2

What do you like best about the product?
Our company used to use Auth0 both in development and in production, and although it was nice to have something cloud based, it lacked some customization options we were really seeking. Fusion Auth was not only simple to setup and deploy, it's made our process for hooking into existing systems. We use this system in all of our tools, both customer and internal, and it's the bee's knees!
What do you dislike about the product?
The UI is a bit of a learning curve, but once you understand how it operates, you'll be flying through those windows in no time.
What problems is the product solving and how is that benefiting you?
We had some other systems that weren't compatible with the feature-set offered by Auth0 and FusionAuth ticked every box. Could not recommend this more!


    Higher Education

User experience

  • May 22, 2025
  • Review provided by G2

What do you like best about the product?
Lots of options to build a robust security pipeline
What do you dislike about the product?
the interface is a bit confusing make it seem complicated
What problems is the product solving and how is that benefiting you?
reducing the amount of bots and also making sure that I get the right person to access my content


    Information Technology and Services

FusionAuth was the ultimate solution for cross-products unified login experience

  • May 20, 2025
  • Review provided by G2

What do you like best about the product?
The security and compliance features available in FusionAuth
What do you dislike about the product?
The UI could be better in terms of styling and design
What problems is the product solving and how is that benefiting you?
With FusionAuth we were able to unify the log in experience cross apps, before that we were not able to offer that.


    Will H.

Great auth you can self host

  • May 19, 2025
  • Review provided by G2

What do you like best about the product?
Fusion auths documentation is top notch. My team also finds it amazing to be able to self host so we can control our data
What do you dislike about the product?
Not being able to create users with a passwordless login flow. Its quite annoying to work around this
What problems is the product solving and how is that benefiting you?
Easy integration of identity providers saved me a ton of time rolling this myself


    Carlos N.

Fantastic product with even better customer service experience

  • May 19, 2025
  • Review provided by G2

What do you like best about the product?
The team is highly professional, patient, and amicable.
What do you dislike about the product?
So far no downsides!! The team is very much available to schedule quick syncs to answer questions.
What problems is the product solving and how is that benefiting you?
We are using FusionAuth as our identity management solution for our multi-product software applications.