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bootstrap-vue
BootstrapVue provides one of the most comprehensive implementations of Bootstrap v4 for Vue.js. With extensive and automated WAI-ARIA accessibility markup.
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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.
There's a note on the project roadmap that the "Primary goal of the team is to rewrite bootstrap-vue to support Vue 3 and Bootstrap v5. We will do this in a separate repository.". Unfortunately, it appears that further progress has likely been delayed by current events - one of the developers is Ukrainian.
Here's another alternative: https://coreui.io/bootstrap-vue/