Office GitHub Repositories (2026) · Open Source Tools

Open-source Windows and Office activator featuring HWID, Ohook, TSforge, and Online KMS activation methods, along with advanced troubleshooting.

Macro is a unified workspace for teams: email, chat, docs, tasks, agents, calls, and CRM — @-linked together with shared AI memory.

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.

We're rebuilding and open-sourcing the world’s software from scratch.

Bento, the office suite that fits in a file

Build your own AI office with Univer Office SDK. Bring editing, calculation, collaboration, and file processing into your product for people and AI agents. Built on an extensible open-source core.

Note taking and organization; an open-source, clean-room reimplementation of Microsoft OneNote, rebuilt in pure Rust

Powerful web-based Word Processor for docx and odt. Free, Open Source, Private by Design

An open-source Office workspace where people and AI agents create, collaborate, and review together.

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

Fast. Easy. Done. Processing spreadsheets without worrying about large files causing OOM.

Easily generate and modify .docx files with JS/TS with a nice declarative API. Works for Node and on the Browser.

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

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

NPOI Extensions, excel/csv importer/exporter for IEnumerable<T>/DataTable, fluentapi(great flexibility)/attribute configuration

Pin a live Outlook calendar, inbox, tasks or any folder to your Windows desktop. Free since 2005, with 1.2M+ downloads.

💻 A local-first structural editing engine for PPTX files.

View & edit DOCX, XLSX, PPTX in the browser. Progressive loading, formulas, real-time collab, saves to original format.

MIT-licensed, COM-free .NET libraries for creating, reading, editing, converting, rendering, and extracting Office, PDF, email, OneNote, and text formats.

A pure PHP library for reading and writing spreadsheet files