Top 10 ooxml open source projects

Golang library for reading and writing Microsoft Excel™ (XLSX) files.

Create advanced Excel spreadsheets using .NET

Pure go library for creating and processing Office Word (.docx), Excel (.xlsx) and Powerpoint (.pptx) documents

an easy-to-use excel library for php project which is compiled with peachpie. NOT FOR THE COMMON PHP PROJECT!

Generate YARA rules for OOXML documents.

A .NET library for manipulating PowerPoint presentations.

XSD (XML Schema Definition) parser and Go/C/Java/Rust/TypeScript code generator

DITA to Word plug-in

JS convertor of files to HTML and CSS code

Free Microsoft Word document (aka .docx) processing library for .Net