Calculate the real cost of authentication. Based on real-world analysis showing "free" solutions can cost $200K+ more than commercial alternatives over 3 years.
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Learn from companies who've made the build vs buy decision.
"Our need was ultimately simple; authentication infrastructure that could handle complex user experiences. FusionAuth has been an excellent partner, delivers the necessary functionality and performance, and maintains active development cycles."
"What I really enjoy about the product itself is that it makes authentication look easy... If I would make an authentication product myself, it would look exactly the same."
"It's pretty straightforward to set up and use. We appreciate that there are official SDKs and Terraform providers for our scripts and changes."
With FusionAuth, you maintain full control over user data, authentication flows, and business logic. Unlike traditional SaaS solutions, you can deploy on-premises or in your own cloud, customize the entire user experience, and integrate with any system. You only lose control over infrastructure maintenance and security updates - which is typically a benefit.
Yes, FusionAuth provides complete UI customization capabilities. You can use custom themes, CSS, JavaScript, and even completely custom login pages. Unlike many SaaS solutions, FusionAuth gives you full control over the user experience while handling the complex authentication logic behind the scenes.
FusionAuth Community Edition is free forever and can be self-hosted, eliminating vendor lock-in concerns. The core authentication engine is available under a commercial-friendly license. Even if the company disappeared tomorrow, you would continue running your authentication system without interruption. You own your data, deployment, and can migrate using standard protocols (OAuth, SAML, JWT). This is fundamentally different from closed-source SaaS solutions.
Most teams have basic authentication running within a few hours using our Docker setup or cloud deployment. Our quickstart guides cover the most common scenarios, and our APIs are designed for developer productivity. Unlike building from scratch (which takes months), you can have production-ready auth in days, not months.
Everything you need for your technical evaluation.
