openpyxl-alternative

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iron-software / IronXLPython.Examples

Python Excel library that reads, writes, and edits XLSX, XLS, CSV, and TSV files without Microsoft Office or Interop. Runnable Python examples for loading workbooks, cell and range addressing, formulas with automatic recalculation, sorting, border and colour styling, and export to CSV, JSON, and XML. Python 3.7+.

python csv excel xlsx spreadsheet python3 pip write-excel read-excel excel-library iron-software ironxl openpyxl-alternative

Updated Aug 29, 2026
Python

Mullassery / PyStreamXL

Star

Stream large Excel files with constant memory. 46x faster than openpyxl, handles multi-sheet workbooks. Rust-powered, Python API.

python rust streaming etl excel xlsx spreadsheet data-engineering excelreader spreadsheets data-processing excelwriter excel-import data-streaming excel-import-tool openpyxl-alternative

Updated Sep 5, 2026
Python

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