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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.
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PixiJS
The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
The library has plenty of examples of real live web experiences similar to Riot's if you are interested: https://threejs.org/
See also https://spacelamb.12wave.com, it uses Greensock.
There are some attempts at introducing a tag to the HTML spec to natively render 3d models but the responses from the developer community are mixed. People want flexibility which is why exposing lower level APIs that people then can write wrappers for is often the better solution.