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ASP.NET Core
ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.
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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.
Or Conan + CMake. In fact, I would much prefer to use Conan in a company environment, but vcpkg is top notch for open source. Not to say Conan is bad at that, not even close, but its features are excellent to get companies to move to package managers.
By this point you shouldn't give a f*ck about languages and understand most of them work. You should start learning libraries (I recommend C# libs because ms did a nice job with the non complex stuff (so basically not asp.net or Entity)