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parca
Continuous profiling for analysis of CPU and memory usage, down to the line number and throughout time. Saving infrastructure cost, improving performance, and increasing reliability.
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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.
They were bought by Elastic, maybe they'll open source it. There's also https://github.com/parca-dev/parca
Not sure that you could in any language. Need runtime reflection to have metadata about the original source code. Java and go both have runtime reflection, so it is possible for those languages and go’s auto-instrumentation implementation of OpenTelemetry uses eBPF for exactly that purpose.