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Quick and simple integration! (Developers friendly)
What do you like best about the product?
Integration into our project: quick and simple, with numerous examples and complete, up-to-date documentation.
What do you dislike about the product?
Control panel a bit complex to understand.
What problems is the product solving and how is that benefiting you?
Have a complete platform for authentication management
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Fantastic piece of software
What do you like best about the product?
FusionAuth is a solid identity and access management (IAM) platform, and what stands out the most—what I “like best”—depends a bit on the use case, but here are the big highlights:
1. Developer-Friendliness: FusionAuth is built with developers in mind. It’s easy to install (via Docker or native install), well-documented, and has good SDKs for multiple languages. The API-first approach makes it very customisable.
2. Feature-Rich for Free Tier: The Community edition offers a surprising number of features out of the box—like OAuth2, OpenID Connect, SAML, 2FA, JWT support, and more—without needing a paid plan right away.
3. Self-Hosting Option: Unlike many identity providers that are strictly SaaS, FusionAuth lets you self-host. That’s huge for organisations that need control over data, want to comply with specific regulations, or just prefer managing their own stack.
4. Extensibility: You can add custom JWT claims, create custom user data fields, and even run Lambdas (small bits of custom code) during events like login or registration.
5. Migration & Import Tools: FusionAuth has robust tooling for migrating from other auth systems—super useful when switching from Auth0, Firebase, or a custom-built solution.
6. Multi-Tenant Support: If you’re building a SaaS platform, their multi-tenant support makes it easy to separate user bases across different organisations or applications.
1. Developer-Friendliness: FusionAuth is built with developers in mind. It’s easy to install (via Docker or native install), well-documented, and has good SDKs for multiple languages. The API-first approach makes it very customisable.
2. Feature-Rich for Free Tier: The Community edition offers a surprising number of features out of the box—like OAuth2, OpenID Connect, SAML, 2FA, JWT support, and more—without needing a paid plan right away.
3. Self-Hosting Option: Unlike many identity providers that are strictly SaaS, FusionAuth lets you self-host. That’s huge for organisations that need control over data, want to comply with specific regulations, or just prefer managing their own stack.
4. Extensibility: You can add custom JWT claims, create custom user data fields, and even run Lambdas (small bits of custom code) during events like login or registration.
5. Migration & Import Tools: FusionAuth has robust tooling for migrating from other auth systems—super useful when switching from Auth0, Firebase, or a custom-built solution.
6. Multi-Tenant Support: If you’re building a SaaS platform, their multi-tenant support makes it easy to separate user bases across different organisations or applications.
What do you dislike about the product?
the admin UI can feel clunky and unintuitive at times, especially when configuring more advanced features like custom workflows or email templates. It works, but there’s a bit of a learning curve and some UX polish could go a long way.
Also, for very large-scale enterprise needs, you might hit some limitations unless you go with the paid version.
Also, for very large-scale enterprise needs, you might hit some limitations unless you go with the paid version.
What problems is the product solving and how is that benefiting you?
Steep Learning Curve for Advanced Features: While basic setup is straightforward, configuring things like multi-tenancy, custom JWT claims, or advanced workflows can be confusing without diving deep into docs.
2. UI/UX Friction: The admin dashboard isn’t the most intuitive—some settings are buried in menus or worded in ways that aren’t super clean.
3. Limited Built-in User Management Tools: Compared to some competitors, bulk user management, advanced segmentation, or analytics features are limited or require external integration.
4. Community Support vs. Enterprise: The community edition is great, but support is community-based unless you pay for a plan. This can be a bottleneck if you hit a critical issue and need fast help.
5. Customisation Has Limits: While extensible, certain workflows (like custom registration flows or deep UI customisation) might require awkward workarounds or external systems.
6. Docker-Only Convenience: The easiest path to set up is Docker, but if you’re not using containers, the manual install path can be more painful and dependency-heavy.
2. UI/UX Friction: The admin dashboard isn’t the most intuitive—some settings are buried in menus or worded in ways that aren’t super clean.
3. Limited Built-in User Management Tools: Compared to some competitors, bulk user management, advanced segmentation, or analytics features are limited or require external integration.
4. Community Support vs. Enterprise: The community edition is great, but support is community-based unless you pay for a plan. This can be a bottleneck if you hit a critical issue and need fast help.
5. Customisation Has Limits: While extensible, certain workflows (like custom registration flows or deep UI customisation) might require awkward workarounds or external systems.
6. Docker-Only Convenience: The easiest path to set up is Docker, but if you’re not using containers, the manual install path can be more painful and dependency-heavy.
FusionAuth Review
What do you like best about the product?
Pricing is very competitive and it's very easy to onboard.
What do you dislike about the product?
Customer support is lacking considering that we wanted to upgrade our plan later on.
What problems is the product solving and how is that benefiting you?
Helps customers login with ease.
It was fine experience using Fusion Auth
What do you like best about the product?
Authentication and authorization. Also, user management working well for us
What do you dislike about the product?
There are better competitors available in less price and better services.
What problems is the product solving and how is that benefiting you?
Authentication and Authorization
FusionAuth Review
What do you like best about the product?
They make multi-factor authentication very smooth and fast
What do you dislike about the product?
Nothing, this is a very good platform if I need to do MFA, and SSO
What problems is the product solving and how is that benefiting you?
They are protecting my accounts and ensuring my account safety especially in an age where cybercrime is at an all time high. I feel much safer and secure about my online presence.
Good solution for IAM requirements under one hood
What do you like best about the product?
Fusion Auth has covered authentication grounds on all levels, be in single sign on, MFA.
What do you dislike about the product?
I faced some challenges while moving authenticator backups from my android phone to ios. The backup wasnt compatible with the iphone application.
What problems is the product solving and how is that benefiting you?
All the MFA and Single sign on issues are no more a roadblock or a headache with Fusion auth. Very user friendly and certainly meets the IAM requirement of our organisation.
I use it for our rental fleet at my business
What do you like best about the product?
It is easy to use and everything is one place
What do you dislike about the product?
There are several steps to get into the program I need
What problems is the product solving and how is that benefiting you?
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A highly customizable authentication provider
What do you like best about the product?
With FusionAuth it becomes easy to manage the authentication of its applications. One of the biggest advantages of Fusionauth that I appreciated is its API interface which allows to build an overlay when Fusionauth does not make accessible to certain functionalities while maintaining Fusionauth as the authentication core.
What do you dislike about the product?
Currently, it is not yet possible to manage one-click migrations between different instances or environments. The only possible solution is to write scripts that can apply changes between different environments; this works but could be made even easier if fusionauth allowed one-click migrations.
What problems is the product solving and how is that benefiting you?
- User management
- Authentication
- Authorization
- Authentication
- Authorization
Developer
What do you like best about the product?
Very clear interface and easy to use API. I find the documentation also to be clear and easy to search
What do you dislike about the product?
Searching users is sometimes slow: we have over a million users.
What problems is the product solving and how is that benefiting you?
We have a website and other internal applications that require authentication, with FusionAuth we can create diffferent applications with different settings.
A Mixed Bag with FusionAuth
What do you like best about the product?
I really appreciate the customization FusionAuth brings to the table - it’s a standout feature that gives you the flexibility to mold it to your specific needs. The model is well-designed, and the feature set is impressive, covering a lot of bases for authentication and user management. It feels developer-friendly, which makes integration into projects smoother and more enjoyable.
What do you dislike about the product?
Despite its strengths, there are some frustrating drawbacks. The API breaking between releases is a big issue - it’s disruptive and adds unnecessary rework. I also found the authorization customization lacking; there’s no easy way to implement permission-based or attribute-based authorization, which feels like a missed opportunity for a service like this. On top of that, the API can be unreliable. For example, when deleting a user from a group, I’ve seen inconsistent results—sometimes it removes their roles, sometimes it doesn’t, and it’s unpredictable. These issues make it harder to rely on consistently.
What problems is the product solving and how is that benefiting you?
FusionAuth is solving problems related to authentication, authorization, two-factor authentication (2FA), and single sign-on (SSO) by offering a system that manages user logins, assigns basic roles, provides 2FA options like Google Authenticator or SMS, and enables SSO across applications using standards like OAuth2 and OpenID Connect. For me, this means I can offload these identity management tasks without building them from scratch, which reduces development time. However, the inconsistent API behavior - like unpredictable role deletions when removing users from groups - and limited authorization flexibility require me to spend extra effort on workarounds or adjustments.
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