Typeform is the polished end of form and survey building, known for clean one-question-at-a-time "conversational" forms with thoughtful design, smooth logic, and a respondent experience that feels less like a chore. Two things send people looking elsewhere. The first is metering - lower tiers cap how many responses you can collect, so a form that takes off can simply stop accepting answers until you upgrade. The second is custody: your respondents' replies, often personal, sit on Typeform's servers rather than yours. The self-hosted open form builders below remove both limits at once. You get unlimited responses with no per-tier ceiling, conditional logic and forms that still look good, and every submission landing on infrastructure you run and control.
Formbricks is a free and open source survey platform and privacy-first experience management tool. It gathers feedback and user insights at every point in the journey through in-app, website, link, and email surveys, and you can either use its built-in analysis or build on top of the data you collect.
Typebot is a chatbot builder for creating advanced chatbots visually. You design conversational flows on a canvas, embed them anywhere on websites and web or mobile apps, and collect results in real time.
HeyForm is an open-source form builder for creating surveys, quizzes, polls, and other conversational forms. It collects information and feedback through interactive online forms and runs as a hosted service or self-hosted on your own infrastructure.
LimeSurvey is a free, open-source online survey platform for building questionnaires, polls, and forms. It is used by businesses, schools, governments, and other organizations that need flexible data collection without vendor lock-in.
OpnForm is an open-source form builder for creating online forms, surveys, and workflows. It is built for teams that want to collect responses without giving up control of their data, and it runs as a managed cloud service or self-hosted on your own infrastructure.
Form.io is a combined form and API platform for serverless applications. A drag-and-drop builder lets you design data management apps, and each form is automatically backed by a REST API for collecting and routing data. Forms embed in Angular.js and React apps through the <formio> HTML element.
TDuck is an open-source questionnaire and form platform for enterprises that need to collect and manage business data. It supports private deployment and replaces manual collection workflows with a configurable data entry and publishing system.
Nextcloud Forms is a simple survey and questionnaire app for Nextcloud. It helps collect responses without moving form data outside your own Nextcloud instance, keeping survey info and answers private under your control.
KoboToolbox is a platform for collecting, analyzing, and managing data for surveys, monitoring, evaluation, and research. It is widely used by humanitarian and development organizations for field data collection, served by its KPI backend.
Concerto Platform is an open-source online adaptive testing platform for creating and delivering assessments. It is built for web-based testing workflows where questionnaires, item banks, and scoring need to be managed in one system.
