OpenOffice

Docs reference for the excelize library. https://xuri.me/excelize

(Libre/Open)Office Python macros simple enablement in the IDE of your choice e.g. Geany, KDevelop, PyCharm, Anaconda, etc ..

Go language library for reading and writing Microsoft Excel™ (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets https://github.com/xuri/excelize

Page Numbering addon for LibreOffice