CoreXLSX Excel spreadsheet (XLSX) format parser written in pure Swift CoreXLSX is a library focused on representing the low-level structure of the XML-based XLSX spreadsheet format. It allows you to ...

Octave and MATLAB toolbox for GDSII stream format. Contribute to ulfgri/gdsii-toolbox development by creating an account on GitHub.

If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Learn how to format numbers in Thousands, Millions, and Billions in Excel and Google Sheets. Use number Formatting to convert numbers.