RAD PDF's NuGet package (https://www.nuget.org/packages/RadPdf/) provides the necessary resources to run using ASP.NET Core / ASP.NET 5 on many Linux distributions.
While the RAD PDF installer only runs on Windows, it includes ASP.NET Core / ASP.NET 5 samples which can be compiled and deployed to Linux servers. Support for this platform is not yet "officially" supported, but most of the code is identical to our stable release for the .NET Framework.
We welcome feedback as we continue to test Linux compatibility.
Live Demo: https://www.radpdf.com/demo/net5/