Top 20 NuGet openXML Packages

Read and create Excel files in OpenXml format. Based on SpreadsheetLight library and merged with old version of DocumentFormat.OpenXml to allow use new one.
Owl OpenXml
This is a wrapper simplifying some of the functionality available in the OpenXML SDK v2.0. Currently only Excel functionality is implemented.
Extends the Open XML framework
Library for generating DOCX documents based on templates in DOCX format with all features of MS Word available
Customizable open source library for validating generic file formats (size, extension, file signature, checksum etc.) with available extensions which can detect corrupted files of some popular file formats.