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raspiCam
RaspiCam, a simple web application to stream, take pictures or record videos from your raspberry pi camera.
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Hubble-Pi
Documentation, Resources and Python Codes for portable Astrophotography and KStars Setup with Raspberry Pi 4 and HQ 12MP Camera Module
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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.
For your gui problem, this guy (https://github.com/RemovedMoney326/Hubble-Pi) made a software to control the rpi camera, handling photos and live preview, but I don't know if you have IT knowledge (I don't even know if his project need any). I hope it can help you.