SurveyJS

SurveyJS is an open-source JavaScript form builder library that allows developers to set up a custom form management platform inside any web application. Unlike popular SaaS form builders like Typeform, Google Forms, or SurveyMonkey, SurveyJS is not a hosted service and imposes no usage limits. You can create unlimited forms, collect unlimited responses, and scale without worrying about pricing tiers or feature restrictions. Because SurveyJS integrates directly into your app, it is fully customizable—you have the flexibility to adapt the UI and extend functionality to fit your exact needs. At the same time, SurveyJS gives you full control over where your data is processed and stored, as you can connect the libraries to any server or database you use. SurveyJS works with all modern frameworks, including React, Angular, and Vue. It lets teams build complex, multi-step form wizards that feel like a natural part of their product. It's a good fit for B2B and SaaS companies, especially in industries like FinTech, HealthTech, HRTech, EdTech, and enterprise software, where forms are part of critical workflows and often involve sensitive data.