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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.
Hi all, I'd like to share an open-source, online tool I have been developing that provides a scripting environment for GeoJSON data: geojsonscript.io. I hope it may prove useful if you are looking to quickly explore or transform GeoJSON data. There are a few example use cases on the About page that you can run, if interested. If you do find it helpful and encounter any issues, please feel free to log them in GitHub and I will try to address them as best I can. Thank you!
I recommend you add spatialite webassembly so you can run spatial functions operations https://github.com/jvail/spl.js Support geopackage vector features and esri mobile geodatabase (sqlite) and shapefiles and kml and output GEOJSON for map view (ExportGeojson2)