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gse-sound-output-device-chooser
Gnome Shell Extension to show a simple chooser to select Input & Output device based on gnome control center
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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.
The second, related, thing is that I cannot hide audio interfaces that I can switch to in the new picker. This wasn't a Gnome feature, exactly. I used to use https://extensions.gnome.org/extension/906/sound-output-device-chooser/ in Gnome 42 which allowed me to hide interfaces I don't use. This allowed me to bring my selection from 4 interfaces to 2, which greatly improved the usage of the picker.