Saxon

public static void TestTransform(string xsltFile, string inputFile, string outputFile) { TextWriter writer = null; var xslt = new FileInfo(xsltFile); var input = new FileInfo(inputFile); var output = new FileInfo(outputFile);

        // Compile stylesheet
        var processor = new Processor(false);
        var compiler = processor.NewXsltCompiler();
        var executable = compiler.Compile(new Uri(xslt.FullName));


        using (var inputStream = input.OpenRead())
        {
            var transformer = executable.Load();
            transformer.SetInputStream(inputStream, new Uri(input.DirectoryName));

            Serializer serializer = processor.NewSerializer(writer);
            transformer.Run(serializer);
        }


    }

Sorry, but Saxon is not supported on .NET Core. This is a limitation of the IKVM technology that we use for porting Saxon from Java to .NET. We have been exploring various options that might provide a way forward on this, but we can't promise anything imminent.

Did you consider wrapping Saxon into web front end and exposing it through REST API? This would expose Saxon to a number of technologies you do not support out of the box now. It would create new optimization opportunities like allowing sharing names through whole process, and avoiding jvm warmup.