The G2 on FusionAuth

FusionAuth Pros and Cons: Top Advantages and Disadvantages

Quick AI Summary Based on G2 Reviews

Generated from real user reviews

Users find FusionAuth easy to set up and use, providing seamless integration and flexibility for customized workflows. (41 mentions)

Users appreciate the customization and flexibility of FusionAuth, enhancing both branding and integration for their systems. (35 mentions)

Users value the smooth integration capabilities of FusionAuth, enabling centralized authentication and user management across multiple applications. (35 mentions)

Users appreciate the easy integrations of FusionAuth, enhancing their authentication and user management experience seamlessly. (33 mentions)

Users praise the knowledgeable support team of FusionAuth, highlighting their readiness to assist in various scenarios. (31 mentions)

Users find the complexity of setup challenging, requiring patience and time to navigate advanced configurations. (21 mentions)

Users find the complex setup challenging, requiring patience and additional assistance during initial configuration. (15 mentions)

Users experience a difficult learning curve with FusionAuth, but support and documentation help ease the process. (14 mentions)

Users find the limited customization options of FusionAuth challenging, especially for advanced features and enterprise needs. (12 mentions)

Users note the limited features of FusionAuth can hinder functionality, especially for advanced setups and large-scale needs. (12 mentions)

Users face customization difficulties with FusionAuth due to cumbersome theme engines and limited configuration flexibility. (11 mentions)

Users experience a learning curve with FusionAuth, especially when delving into advanced features and functionality. (11 mentions)

Top Pros or Advantages of FusionAuth

1. Ease of Use

Users find FusionAuth easy to set up and use, providing seamless integration and flexibility for customized workflows.

See 41 mentions

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Verified User

Small-Business (50 or fewer emp.)

5.0/5

"It's a game changer"

What do you like about FusionAuth?

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 customizat

Saeef K.

Small-Business (50 or fewer emp.)

4.5/5

"Finally, our team can build features, not just endlessly manage user logins"

What do you like about FusionAuth?

What we truly like is that it is quite seamless to utilise several separate client environments with only a single FusionAuth instance. The flexibilit

2. Features

Users appreciate the customization and flexibility of FusionAuth, enhancing both branding and integration for their systems.

See 35 mentions

See Related User Reviews

Verified User

Small-Business (50 or fewer emp.)

5.0/5

"It's a game changer"

What do you like about FusionAuth?

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 customizat

Saeef K.

Small-Business (50 or fewer emp.)

4.5/5

"Finally, our team can build features, not just endlessly manage user logins"

What do you like about FusionAuth?

What we truly like is that it is quite seamless to utilise several separate client environments with only a single FusionAuth instance. The flexibilit

3. Integrations

Users value the smooth integration capabilities of FusionAuth, enabling centralized authentication and user management across multiple applications.

See 35 mentions

See Related User Reviews

Scott F.

Small-Business (50 or fewer emp.)

5.0/5

"Excellent product and great resources are available"

What do you like 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 OAu

Shakir V.

Mid-Market (51-1000 emp.)

4.5/5

"A Huge Time-Saver That Let Us Ditch Our Legacy Auth Stack for Good"

What do you like about FusionAuth?

What I love most about FusionAuth is that it let us centralize our authentication and user management without having to build everything ourselves. We

4. Easy Integrations

Users appreciate the easy integrations of FusionAuth, enhancing their authentication and user management experience seamlessly.

See 33 mentions

See Related User Reviews

Scott F.

Small-Business (50 or fewer emp.)

5.0/5

"Excellent product and great resources are available"

What do you like 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 OAu

Shakir V.

Mid-Market (51-1000 emp.)

4.5/5

"A Huge Time-Saver That Let Us Ditch Our Legacy Auth Stack for Good"

What do you like about FusionAuth?

What I love most about FusionAuth is that it let us centralize our authentication and user management without having to build everything ourselves. We

5. Customer Support

Users praise the knowledgeable support team of FusionAuth, highlighting their readiness to assist in various scenarios.

See 31 mentions

See Related User Reviews

Verified User

Small-Business (50 or fewer emp.)

5.0/5

"It's a game changer"

What do you like about FusionAuth?

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 customizat

Verified User

Small-Business (50 or fewer emp.)

5.0/5

"Dev-friendly SSO solution"

What do you like about FusionAuth?

It's easy to set up SSO across apps. Also really simple to download and run locally, which helps us test new versions before making any changes. The h

Top Cons or Disadvantages of FusionAuth

1. Complexity

Users find the complexity of setup challenging, requiring patience and time to navigate advanced configurations.

See 21 mentions

See Related User Reviews

Adrian B.

Mid-Market (51-1000 emp.)

5.0/5

"Identity Management That Fits Your Business and Works for Developers."

What do you dislike about FusionAuth?

Indeed, the depth of the system might be overwhelming for a novice, and it will take some time to get accustomed to the functionality before all setti

Kevin T.

Small-Business (50 or fewer emp.)

5.0/5

"Auth Made Simple"

What do you dislike about FusionAuth?

A lot more config is needed when setting up our applications. It was a little more difficult to get started.

2. Complex Setup

Users find the complex setup challenging, requiring patience and additional assistance during initial configuration.

See 15 mentions

See Related User Reviews

Verified User

Small-Business (50 or fewer emp.)

4.5/5

"Great tool to put OAuth2 in place"

What do you dislike about FusionAuth?

I haven't heard any complaint from the team. However, some members found it to be harder to understand. But, the more experienced members where able t

Kevin T.

Small-Business (50 or fewer emp.)

5.0/5

"Auth Made Simple"

What do you dislike about FusionAuth?

A lot more config is needed when setting up our applications. It was a little more difficult to get started.

3. Difficult Learning

Users experience a difficult learning curve with FusionAuth, but support and documentation help ease the process.

See 14 mentions

See Related User Reviews

Verified User

Small-Business (50 or fewer emp.)

4.5/5

"Great tool to put OAuth2 in place"

What do you dislike about FusionAuth?

I haven't heard any complaint from the team. However, some members found it to be harder to understand. But, the more experienced members where able t

Verified User

Small-Business (50 or fewer emp.)

5.0/5

"It's a game changer"

What do you dislike about FusionAuth?

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.

4. Limited Customization

Users find the limited customization options of FusionAuth challenging, especially for advanced features and enterprise needs.

See 12 mentions

See Related User Reviews

Satyam G.

Small-Business (50 or fewer emp.)

5.0/5

"Fusion Auth Is Awesome"

What do you dislike about FusionAuth?

Even they provide customize theme for enterprise plan but there should be more preinstall ui the current one is just two tiny small boxes

Kranthi R.

Mid-Market (51-1000 emp.)

4.0/5

"FusionAuth, A highly flexible, cost effective platform that covers all your user management needs."

What do you dislike about FusionAuth?

UI customisations need improvements. Request logs needs to be improved a lot.

5. Limited Features

Users note the limited features of FusionAuth can hinder functionality, especially for advanced setups and large-scale needs.

See 12 mentions

See Related User Reviews

Shane M.

Mid-Market (51-1000 emp.)

5.0/5

"Fantastic piece of software"

What do you dislike about FusionAuth?

the admin UI can feel clunky and unintuitive at times, especially when configuring more advanced features like custom workflows or email templates. It

Adrian B.

Mid-Market (51-1000 emp.)

5.0/5

"Identity Management That Fits Your Business and Works for Developers."

What do you dislike about FusionAuth?

Indeed, the depth of the system might be overwhelming for a novice, and it will take some time to get accustomed to the functionality before all setti

6. Customization Difficulties

Users face customization difficulties with FusionAuth due to cumbersome theme engines and limited configuration flexibility.

See 11 mentions

See Related User Reviews

Satyam G.

Small-Business (50 or fewer emp.)

5.0/5

"Fusion Auth Is Awesome"

What do you dislike about FusionAuth?

Even they provide customize theme for enterprise plan but there should be more preinstall ui the current one is just two tiny small boxes

Kranthi R.

Mid-Market (51-1000 emp.)

4.0/5

"FusionAuth, A highly flexible, cost effective platform that covers all your user management needs."

What do you dislike about FusionAuth?

UI customisations need improvements. Request logs needs to be improved a lot.

7. Learning Curve

Users experience a learning curve with FusionAuth, especially when delving into advanced features and functionality.

See 11 mentions

See Related User Reviews

Verified User

Small-Business (50 or fewer emp.)

4.5/5

"Great tool to put OAuth2 in place"

What do you dislike about FusionAuth?

I haven't heard any complaint from the team. However, some members found it to be harder to understand. But, the more experienced members where able t

Verified User

Small-Business (50 or fewer emp.)

5.0/5

"It's a game changer"

What do you dislike about FusionAuth?

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.

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John L.

Engineering Director

Mid-Market (51-1000 emp.)

5/30/2025

"Simple, Robust, Easy to use"

5/5

What do you like best about FusionAuth?

FusionAuth is easy to use and intuitive. The implementation process was straight forward and the flexibility it provides enables us to provide the functionalities our customers need. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

There are occasional minor quirks in the user interface portal page. But nothing that can't be overcome Review collected by and hosted on G2.com.

Gayuru G.

Product General Manager

Mid-Market (51-1000 emp.)

5/25/2025

"Great Auth Service - Super Reliable and Great Service!"

5/5

What do you like best about FusionAuth?

The doco is very comprehensive + Reliability is great, and the support has been super responsive to our queries. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

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 Review collected by and hosted on G2.com.

S W.

Technical & Solutions Architect

Financial Services

Mid-Market (51-1000 emp.)

5/30/2025

"A generally decent auth provider for devs and enterprises."

4/5

What do you like best about FusionAuth?

Good documentation. Decent, responsive support with multiple channels. Large and exanding featureset. Straightworward integration with any platform supporting OIDC/SAML. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

Some implementation quirks, though generally easy to deal with using support. Review collected by and hosted on G2.com.

Will H.

Staff Software Engineer

Small-Business (50 or fewer emp.)

5/19/2025

"Great auth you can self host"

5/5

What do you like best about FusionAuth?

Fusion auths documentation is top notch. My team also finds it amazing to be able to self host so we can control our data Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

Not being able to create users with a passwordless login flow. Its quite annoying to work around this Review collected by and hosted on G2.com.

Verified User in Utilities

Enterprise (> 1000 emp.)

6/2/2025

"Fusion Auth has been a fantastic tool for us"

4/5

What do you like best about FusionAuth?

The tool is very robust and scalable. It has a bunch of features which has been very helpful for the company Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

Data restoration is up to a certain point only. It would be great to have a feature of reinstating hard deleted data. Reaching out to Fusion auth every time for data restore sounds cumbersome. Review collected by and hosted on G2.com.

Travis D.

Devsecops Engineer

Mid-Market (51-1000 emp.)

5/29/2025

"Nice product"

4/5

What do you like best about FusionAuth?

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. Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

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. Review collected by and hosted on G2.com.

Ashura J.

Csr Contractors

Mid-Market (51-1000 emp.)

9/23/2025

"Solid!"

4.5/5

What do you like best about FusionAuth?

It's user friendly, offers great flexibility with customizable workflows that are easy to set up & use Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

Nothing so far. I like the software..... Review collected by and hosted on G2.com.

Makarand B.

Founder & Chief Partnership Officer

Small-Business (50 or fewer emp.)

4/14/2025

"Perfect Auth Solution for SaaS"

5/5

What do you like best about FusionAuth?

FusionAuth delivered a seamless auth solution for our multi-tenant SaaS without any workarounds.

Onboarding was fast and smooth, Clean APIs, solving our needs right out of the box.

Their customer success team is prompt, helpful, and always available when needed Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

We found the social login integration to have a learning curve,but we had a alternatitve so did not leverage this feature Review collected by and hosted on G2.com.

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

FusionAuth is solving our multi-tenant authentication challenges by providing a clean, out-of-the-box solution that doesn’t require workarounds. It allows us to manage users and tenants efficiently, with a fast onboarding process. This has saved us time, reduced complexity, and ensured a more secure and scalable auth setup. Review collected by and hosted on G2.com.

Satyam G.

Programmer

Small-Business (50 or fewer emp.)

5/27/2025

"Fusion Auth Is Awesome"

5/5

What do you like best about FusionAuth?

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 Review collected by and hosted on G2.com.

What do you dislike about FusionAuth?

Even they provide customize theme for enterprise plan but there should be more preinstall ui the current one is just two tiny small boxes Review collected by and hosted on G2.com.