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SynthGL / wolfxl-ossView on GitHub
openpyxl alternative for Python with a Rust backend: edit existing Excel .xlsx and .xlsm files in place without losing formatting, charts, or macros, and recalculate common formulas. WolfXL 2.0.21 measured 6.7-12.0x faster than openpyxl 3.1.5 on the committed read/write benchmark. MIT.
☆13Nov 7, 2026Updated this week

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