Top 20 NuGet performance Packages

Lightweight mini-profiler, in particular designed for ASP.NET MVC sites (then ported to support .NET 3.5 Webforms sites)
Easy .NET Performance Benchmarking
A scaleable and easy to use BI framework writing in C#. Graphene can be used to track various Metrics similar to Graphite. The pre-aggregated data can be stored in SQL Server or MongoDB. https://github.com/bobanjose/Graphene/blob/master/README.md
Framework agnostic clone of ASP.NET MVC MiniProfiler, decoupled from MVC. Explicit / invasive profiling that you can run in production, with extensible result rendering.
MiniProfiler extensions and helpers for RavenDb
MiniProfiler extensions and helpers for ASP.NET MVC 4+
MiniProfiler integration for Entity Framework versions 4 and 5.
MiniProfiler extensions and helpers for MongoDb
Library to be used with your application in order to use PerformanceCounter
MiniProfiler integration for Entity Framework 6 adjusted for ServiceStack
A pure C# portable class library (PCL) implementation of high performance LZ4 compression algorithm, with streaming interface (System.IO.Stream derived). It includes a High Compression (HC) codec variant, which is slower than the standard LZ4 codec, but provides a better compression ratio. This li...
Splunk>MINT Xamarin Android Java Bindings
Splunk>MINT Xamarin iOS Classic API Objective-C Bindings
Library for collecting and tracking performance metrics in your .NET applications.
XSD schema and sample App.config for Qoollo.PerformanceCounters.
A lightweight, micro-benchmarker for .NET.
Logary is a high performance, multi-target logging, metric and health-check library for mono and .Net.
Logary is a high performance, multi-target logging, metric and health-check library for mono and .Net.
UBench is a simple yet powerful microbenchmark implementation. Just invoke Bench() extension method on Action or Action[] types.