pyopenxlsx is a high-performance Python binding for the OpenXLSX C++ library. It aims to provide significantly faster read/write speeds compared to pure Python libraries like openpyxl, while maintaining a Pythonic API design.
CSVX is an open, plain-text spreadsheet format for the AI era: human- and AI-readable CSV-shaped tables with types, formulas, formatting, comments, structured annotations, multi-line cells, and sheets.