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awesome-selfhosted
A list of Free Software network services and web applications which can be hosted on your own servers
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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.
I’m not familiar with photo services since I don’t try to access my photos the way I do my downloaded movies but they should be included in the time machine backup. Someone else linked this repository in one of the comments above and it seems like the section on “Photo and Video Galleries” might be what you’re looking for. https://github.com/awesome-selfhosted/awesome-selfhosted