Top 20 NuGet instrumentation Packages

Manual instrumentation library for Datadog APM
Adds detailed tracing to any method without modifying your source code. Several backends are available as separate NuGet packages. An official PostSharp pattern library.
Provides OpenTracing support for Datadog APM
The #1 pattern-aware extension to C# and VB.
Provides OpenTracing support for SignalFx Tracing
Manual instrumentation library for SignalFx Tracing
Redistributable components for package 'PostSharp.Patterns.Diagnostics'. This package should only be installed as a dependency. (This is not the package you are looking for).
HdrHistogram supports low latency recording and analyzing of sampled data value counts across a configurable integer value range with configurable value precision within the range.
PostSharp.Patterns.Diagnostics: instrumentation of HttpClient.
Prometheus statistics Handler for Apache Kafka consumers and producers in .Net
Auto-instrumentation dotnet global tool for Datadog APM
Dynamically wrap interfaces with OpenTracing instrumentation
PostSharp SDK allows for development of PostSharp add-ins using low-level APIs.
Kexla is mappper for CRUD opreation for WMI(Windows Management Instrumentation)
CloudWatch App.Metrics reporter
Get information out of your code at runtime to send it to log files, perf counters, consoles, services, sensors. Maximum flexibility and maintainability, minimum code.