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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.
A search on GitHub also turned out several projects that look promising, including this simple Conky layout and "Muezzin", which claims to be based on a smartphone app called "Muslim Pro", so the interface may already be familiar to you.
A search on GitHub also turned out several projects that look promising, including this simple Conky layout and "Muezzin", which claims to be based on a smartphone app called "Muslim Pro", so the interface may already be familiar to you.