Top 20 NuGet Packages
Export Excel sheet data to Xml/Json using ClosedXML.
This package is deprecated, and has been replaced by ExcelDna.Interop - https://www.nuget.org/packages/ExcelDna.Interop/.
Command-line utility to create a compiled HTML Help Workshop file (.chm) for ExcelDna. To build compiled help file (.chm) the HTML Help Workshop must be installed. For examples see https://github.com/Excel-DNA/ExcelDnaDoc.
Lib to manipulate Excel files.
A library to parse Excel formulas
Make it easier to read/write Excel files
Writing Excel applications in .NET using the MVC/MVVM pattern. Use this package if you intend to write applications using both ExcelMvc and Excel-DNA.
This project provide simple extensions to create/read excel/csv files
Official client library for Excepticon, the beautifully simple exception montior for .NET.
Official ASP.NET client library for Excepticon, the beautifully simple exception montior for .NET.

Exception handling application block of Enterprise Library extensions for support async operations and default exception shield policy definition
Add extension method for ExceptionManager to support exception handling in async actions and functions.
public static async Task<TResult>ProcessAsync<TResult>(this ExceptionManager exceptionManager, string policyName, Func<Task<TResult>> action, TResult defaultValue)
public static async Task Proces...
Lite implementation of MS SQL Exception logger for ASP.Net Core (based on StackExchange.Exceptional).
Exceptionless client extras. Exceptionless is a cloud based error reporting service that sends your exceptions to http://exceptionless.io and provides aggregated views and analytics.
A lucene style query parser that is extensible and allows additional syntax features.
Exceptionless client for WPF applications. Exceptionless is a cloud based error reporting service that sends your exceptions to https://exceptionless.com and provides aggregated views and analytics.
A Log4Net appender for the Exceptiontail library. This appender uses the 2.0 version of the library. More details at https://www.exceptiontail.com/articles/log4net