Go (golang) library for reading and writing XLSX files
An AI-native office suite for macOS and Windows
C library for reading/writing values from/to Excel .xlsx files.
csv2odf can convert csv data to formatted spreadsheets and documents.
C++ library for creating XLSX files for MS Excel 2007 and above.
Extension for importing, viewing, slicing, dicing, and charting JSON
Excel to TMX file converter
Open source Extract Transform Load engine written in Java
Tool to produce the CERIF deliverables (XML Schemas and XML Semantics)