#xlsx

The fastest Office document library for Python, Rust, Go, JS/TS, C# and WASM. DOCX, XLSX, PPTX, DOC, XLS, PPT. Up to 100× faster than python-docx/openpyxl/python-pptx. 100% pass rate on valid Office files. MIT/Apache-2.0.

Lightweight and very fast XLSX Excel Spreadsheet Writer in PHP. Supports full XLSX-file functionality - cell formatting, formulas, styles, charts, etc.

Utility to convert Excel XLSX files to JSON

Excelize is a C# port of Go Excelize library that allow you to write to and read from XLAM / XLSM / XLSX / XLTM / XLTX files.

모두 파싱해버리겠다 — HWP3·HWP·HWPX·HWPML·PDF·XLS·XLSX·DOCX → Markdown. 신구대조·양식 자동 채우기·MCP 통합 (CLI + MCP Server) | Parse Korean documents (HWP3-5, HWPX, HWPML, PDF, Office) to Markdown — CLI + MCP Server with form-filler & diff

OfficeCLI is the first and best Office suite purpose-built for AI agents to read, edit, and automate Word, Excel, and PowerPoint files. Free, open-source, single binary, no Office installation required.

A browser-based viewer for Office Open XML documents that renders to an HTML Canvas element.

A pure rust library for reading and writing spreadsheet files

Zero-dependency TypeScript toolkit for Excel, Word, PDF, CSV, Markdown, XML & ZIP — one API across Node.js, Bun & browsers.

Browser-native Office / PDF / CAD / archive viewer for internal web apps, with Vue, React, Svelte, jQuery, Web Components, and no server-side conversion.

High-performance Rust library for extracting content from DOCX, XLSX, and PPTX into Markdown, plain text, or JSON with CJK support and .NET/Python bindings.

OfficeDex is the first Al-Native VibeOfficing platform for documents, slides, and spreadsheets

Stream millions of rows to XLSX with O(1) memory and direct S3 multipart upload. Laravel-friendly. PHPSpreadsheet alternative for large exports.

Document metrics, structure extraction, and code exploration for real repositories

A Python module for creating Excel XLSX files.

MCP server + CLI giving AI agents 50 spreadsheet tools for .xlsx — live-recalc formulas (~390 Excel functions), repair broken references & external links, read/write, diff, and audit. Works in Claude Code, Cursor, Codex, and any MCP client.

Elixir library for reading spreadsheets

WASM build of a minimal headless / library which is intended to support document conversion on web and server.

Programmable spreadsheet platform with a TypeScript/Rust engine, SDK, and embeddable workbook runtime.

Fast, zero-dependency CSV, XLSX and ODS reader/writer for PHP

React file viewer for PDF, DOCX, PPTX, XLSX, EPUB, Markdown, code and media—20+ formats, rendered entirely in the browser.