NanoXLSX is a small .NET library written in C#, to create and read Microsoft Excel files in the XLSX format (Microsoft Excel 2007 or newer) in an easy and native way
ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
GemBox.Spreadsheet is a .NET library that enables you to read, write, convert, and print spreadsheet files (XLSX, XLS, XLSB, CSV, HTML, and ODS) from .NET applications in a simple and efficient way.
Create or Modify Power Point/Presentation (pptx), Excel/Spreadsheet (xlsx) & Word/Document (docx) file with ease in Rust, C#, Python🚧⚒️, Java🚧⚒️,Go🚧⚒️ or Typescript🚧⚒️