Open-source Fillout alternatives

HeyForm is an open-source form builder aimed at small businesses and teams that need to collect information or feedback. It focuses on conversational forms, which cover surveys, quizzes and polls, and lets people build them without writing code.

Forms can use many input types, from text, email and phone number fields to picture choices, date pickers and file uploads. Conditional logic and URL redirects make forms adapt to answers. Integrations include webhooks, analytics and marketing tools, plus Zapier and Make.com. Themes control fonts, colors and backgrounds, and custom CSS allows deeper branding. Analytics report drop-off and completion rates, and results can be exported to CSV.

HeyForm is written in TypeScript and released under the AGPL-3.0 licence. The maintainers recommend their official hosted service for reliability, automatic backups and no maintenance, and the open-source code remains available for teams that prefer to run it themselves.

Form.io is a combined form and API platform for building data management applications. This repository is the core form and API engine behind the Form.io service. It lets you design forms with a drag-and-drop builder and then embed them in your applications, and it generates the API that stores the submissions. It runs on Node.js and is released under the OSL-3.0 license.

Forms can be rendered in Angular, React, Vue, or plain JavaScript applications, and the platform was designed for serverless architectures. The official documentation, release information, and guides are at help.form.io, and a walkthrough video shows how to build an application on the open-source platform.

A commercial hosted service is run by the vendor on form.io, while the open-source engine can be self-hosted. Form.io suits teams that need configurable, form-driven applications such as intake, workflows, and internal data collection, and want to avoid hand-coding each form and API endpoint.

FormsLab is an open-source tool for building surveys, polls and feedback forms. It can serve as a feedback app for collecting customer opinions, as a poll creator for voting, or as a general survey builder, and it sits in the same space as hosted form services such as Typeform.

Forms can include many types of questions, so layouts are not limited to a fixed template and can be made to look distinct. Surveys can be anonymous, which suits feedback gathering, and the project calls itself an experience management solution. The stack is TypeScript, Next.js, React, TailwindCSS, MongoDB, Prisma and Auth.js.

Developers can run it locally with npm commands for installing, running, testing and linting, and the project welcomes contributions. A live instance is linked from the README for trying it out. FormsLab is released under the MIT license.

Forms.md, formerly known as Blocks.md, is a JavaScript library for building multi-step forms and surveys with very little code. It is positioned as an open-source alternative to Typeform for developers who prefer to embed and control forms in their own sites and apps.

The forms are meant to be production ready: privacy-focused, accessible, localizable and themeable. They fit onboarding flows, data collection and customer feedback. You create forms programmatically with the Composer class, then initialize them with the Formsmd class by passing in the template. It can be installed from npm or used in the browser by downloading the distribution files and including them with script and link tags.

Forms.md is licensed under Apache-2.0 and is free to use. Its topics mention Google Sheets integration, and the project provides a website and documentation for further guidance. It suits developers replacing hosted form builders with code-first forms.