Exporters
An exporter allows you to export results of your benchmark in different formats. By default, files with results will be located in 
.\BenchmarkDotNet.Artifacts\results directory. Default exporters are: csv, html and markdown. 
Here is list of all available exporters:
public IEnumerable<IExporter> GetExporters()
{
    yield return MarkdownExporter.Default; // produces <BenchmarkName>-report-default.md
    yield return MarkdownExporter.GitHub; // produces <BenchmarkName>-report-github.md
    yield return MarkdownExporter.StackOverflow; // produces <BenchmarkName>-report-stackoverflow.md
    yield return CsvExporter.Default; // produces <BenchmarkName>-report.csv
    yield return CsvMeasurementsExporter.Default; // produces <BenchmarkName>-measurements.csv
    yield return HtmlExporter.Default; // produces <BenchmarkName>-report.html
    yield return PlainExporter.Default; // produces <BenchmarkName>-report.txt
}
Plots
If you have installed R, defined %R_HOME% variable and used RPlotExporter.Default and CsvMeasurementsExporter.Default 
in your config, you will also get nice plots with help of the BuildPlots.R script in your bin directory. 
Examples
<BenchmarkName>-barplot.png <BenchmarkName>-boxplot.png <BenchmarkName>-<MethodName>-density.png <BenchmarkName>-<MethodName>-facetTimeline.png <BenchmarkName>-<MethodName>-facetTimelineSmooth.png <BenchmarkName>-<MethodName>-<JobName>-timelineSmooth.png <BenchmarkName>-<MethodName>-<JobName>-timelineSmooth.png
A config example:
public class Config : ManualConfig
{
    public Config()
    {
        Add(CsvMeasurementsExporter.Default);
        Add(RPlotExporter.Default);
    }
}