Quadrum 

See release notes https://github.com/ClosedXML/ClosedXML/releases/tag/ ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and... More information

.NET library for reading, writing, comparing, and converting XBRL reports. Please consider giving feedback if you use the library in your own software projects.