Open alternatives5
Open-source apps that replace Google Forms, Typeform and more

Formbricks is an open-source survey tool for building link, website, in-app and email surveys with a no-code editor and templates. It is for teams that want to collect feedback on their own servers instead of a closed service.

HeyForm is a tool for building online forms, surveys and quizzes that feel like a conversation. It is aimed at anyone, especially small businesses, who want to collect information or feedback.

LimeSurvey is a free online survey tool for creating questionnaires, collecting answers and analyzing the results. It is aimed at businesses, researchers, teachers and anyone who needs forms and surveys.

Nextcloud Forms lets you build simple surveys and questionnaires and collect the answers. It is for people who want to run their own forms on a self-hosted Nextcloud server instead of using a cloud service.
Form.io is a form builder and data backend for web and app projects, letting you make forms by dragging fields and store the answers. It is aimed at developers who want to build data-driven apps without writing a server from scratch.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for forms & surveys? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
How Open Source Everything works