SurveyJS is a suite of open-source JavaScript UI libraries that enable developers to build fully customizable survey and form management systems directly in their applications. Instead of being a hosted SaaS tool, SurveyJS provides frontend components that render forms, collect responses, and visualize data while leaving storage and backend logic entirely under the developer’s control.

The platform is built around a modular architecture consisting of four main components: Form Library (for rendering forms from JSON schemas), Survey Creator (a drag-and-drop form builder), Dashboard (for visualizing responses), and PDF Generator (for exporting forms and results). These components work together to allow teams to create complete, self-hosted form systems tailored to their needs.

SurveyJS uses a JSON-based schema to define form structure, logic, and behavior. Developers or non-technical users (via the visual builder) can create dynamic forms with conditional logic, validation rules, and custom input types. These forms can then be embedded into web applications built with frameworks like React, Angular, Vue, or vanilla JavaScript.

A key differentiator of SurveyJS is its “data ownership” model. Unlike traditional survey platforms, SurveyJS does not store or process user data. All responses are sent to and managed within the developer’s own backend, ensuring full control over privacy, compliance, and infrastructure.

The platform also supports advanced capabilities such as offline data collection, real-time analytics dashboards, custom validation, white-labeling, and extensibility through custom question types or integrations. It is commonly used in industries that require secure data handling—such as healthcare, finance, education, and enterprise applications.

SurveyJS positions itself as an open-source alternative to SaaS survey tools, enabling teams to build scalable, secure, and fully customizable form systems without vendor lock-in.

Key features include:

• Open-source JavaScript form and survey libraries (MIT-licensed core)
• Drag-and-drop form builder (Survey Creator) with JSON schema output
• Real-time analytics dashboards with charts and tables
• PDF generation for forms and collected responses
• Full data ownership with self-hosted backend integration
• Advanced logic, validation, and custom input components
• Offline-first data collection with sync capabilities
• White-labeling and deep UI customization

Common use cases include:

• Building custom survey platforms
• Embedding forms into SaaS products
• Collecting sensitive or regulated data
• Creating internal tools for HR or operations
• Running market research surveys
• Generating PDFs from structured form data

SurveyJS is developed by Devsoft Baltic OÜ and maintained as an open-source project with commercial licensing options for advanced components and enterprise use.