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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Check out grist-electron, a desktop app. https://github.com/gristlabs/grist-electron Not sure if it solves your use case, but I personally love it for my private Grist docs.
There's a docker compose example here https://community.getgrist.com/t/a-template-for-self-hosting-grist-with-traefik-and-docker-compose/856 or an all-in-one image here https://github.com/gristlabs/grist-omnibus or serverless examples here https://gristlabs.github.io/grist-static/ but I do respect your cats on youtube idea.
There's a docker compose example here https://community.getgrist.com/t/a-template-for-self-hosting-grist-with-traefik-and-docker-compose/856 or an all-in-one image here https://github.com/gristlabs/grist-omnibus or serverless examples here https://gristlabs.github.io/grist-static/ but I do respect your cats on youtube idea.