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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.
I use the GNOME extension Sound Output device chooser (https://extensions.gnome.org/extension/906/sound-output-device-chooser/) and it has treated me well until tonight when I went through the pulseeffects stuff. Now any time I use it to change outputs, I get 1-2 minutes of echoing audio that progressively gets louder. By the end of the 2 minutes my neighborhood has woken up. I haven't let it go on much longer than that to see if it fixes itself, or continues forever.