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making-history-sandbox
Simple, intuitive app using React, Leaflet and other packages for making alternate histories, and or choropleth maps in general. Features include pre-made scenarios, timeline, legend, region information, different background maps and more. Successor to Alternate History Editor.
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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.
Sorry if I had some mistakes, I'm not a native English speaker. All the maps were made in the website Making History Sandbox (https://yulin-w.github.io/making-history-sandbox) and the text added in Microsoft Publisher.