Top SPREADSHEET GitHub Repositories & Tools (2026)

Grist is the evolution of spreadsheets.

Go language library for reading and writing Microsoft Excel™ (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets

VTable is not just a high-performance multidimensional data analysis table, but also a grid artist that creates art between rows and columns.

Desbordante is a high-performance data profiler that is capable of discovering many different patterns in data using various algorithms. It also allows to run data cleaning scenarios using these algorithms. Desbordante has a console version and an easy-to-use web application.

ODF generation library for Ruby

Native OOXML engines in Rust - DOCX, XLSX & PPTX editing, rendering and real-time collaboration, compiled to WASM for the web.

Read and write spreadsheet files (CSV, XLSX and ODS), in a fast and scalable way