Open Source Office Suites Tools

Open source office suites tools

projects 18 combined stars ★ 82K refresh nightly

Office Suites is one of the most active slices of the open source world — the 5 projects below are ranked by GitHub stars, which makes this page roughly a community-voted shortlist rather than a vendor-curated catalogue. Every card shows the license and the last-commit date, so you can filter out the two failure modes of free software in one glance: restrictive licensing that blocks your use case, and abandonment that leaves you maintaining a fork. When two projects look comparable, prefer the one with more recent activity and the more permissive license (MIT/Apache-2.0 over AGPL) unless copyleft specifically serves your goals. Hover into any project for its full README — the documentation quality is usually the honest tell of engineering quality.

All Office Suites tools

wordcraft ★ 17K

An open-source, clean-room reimplementation of Microsoft Word in pure Rust

rank001 licenseApache-2.0 written inRust typeOffice Suites

CryptPad ★ 8.0K

Secure collaboration with end-to-end encryption

rank002 licenseAGPL-3.0 written inJavaScript typeOffice Suites

gspread ★ 7.5K

Google Sheets Python API

rank003 licenseMIT written inPython typeOffice Suites

ONLYOFFICE Docs ★ 7.1K

Complete office suite for documents, spreadsheets & more

rank004 licenseAGPL-3.0 written inShell typeOffice Suites

gridcraft ★ 7.0K

GridCraft: an open-source, clean-room spreadsheet (Microsoft Excel-style) in pure Rust. By ArtCraft.

rank005 licenseApache-2.0 written inRust typeOffice Suites

bento ★ 5.6K

Bento, the office suite that fits in a file

rank006 licenseMIT written inTypeScript typeOffice Suites

LibreOffice ★ 4.6K

Free office suite with Microsoft compatibility

rank007 licenseGPL-3.0 written inC++ typeOffice Suites

deckcraft ★ 4.5K

Presentations and slide shows: an open-source, clean-room reimplementation of Microsoft PowerPoint in pure Rust. Part of the ArtCraft Crafting Apps.

rank008 licenseApache-2.0 written inRust typeOffice Suites

KillerPDF ★ 4.3K

Free and open-source PDF editor for Windows with a built-in PDF 2.0 engine. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fil

rank009 licenseGPL-3.0 written inC# typeOffice Suites

IronCalc ★ 4.2K

A spreadsheet engine you can embed, self-host, or run in the browser

rank010 licenseApache-2.0 written inRust typeOffice Suites

Collabora Online ★ 3.4K

Open-source document editing suite for secure collaboration

rank011 licenseNOASSERTION written inShell typeOffice Suites

ZenConverter ★ 1.8K

Local Android file converter built with Kotlin and Jetpack Compose. Convert files on device, with no ads, accounts, or upload-based fallback.

rank012 licenseAGPL-3.0 written inKotlin typeOffice Suites

yft-design ★ 1.7K

yft-design is a powerful, visually stunning online design tool built with Vue3, fabric.js, and Element Plus. 基于fabric.js的开源版【稿定设计】。一款美观且功能强大的在线设计工具，具备海报设计和图片编辑功

rank013 licenseMIT written inTypeScript typeOffice Suites

xleak ★ 1.5K

A fast terminal Excel viewer with an interactive TUI. Features full-text search, formula display, lazy loading for large files, clipboard support, and export to

rank014 licenseMIT written inRust typeOffice Suites

PDF4QT ★ 1.5K

PDF4QT is an open-source PDF toolkit for Windows and Linux, combining powerful desktop applications, command-line tools and a modern MIT-licensed C++/Qt PDF eng

rank015 licenseMIT written inC++ typeOffice Suites

Pdf_Tools ★ 684

Privacy-first, offline PDF editor for Android. Merge, split, compress, convert and annotate PDFs — 100% on-device, no internet required.

rank016 licenseApache-2.0 written inKotlin typeOffice Suites

HermesOffice ★ 624

Free, open-source AI Office suite (Word, Excel, PowerPoint, PDF, Markdown) — macOS build, one-click install

rank017 licenseApache-2.0 written inTypeScript typeOffice Suites

tinylittleoffice ★ 569

A free office suite where your document is inside the link and easy to share. There's no account and nothing saved unless you choose.

rank018 licenseMIT written inTypeScript typeOffice Suites

Frequently asked questions

How many open source Office Suites tools are there?

This registry tracks 18 open source Office Suites projects, with 81,746 combined GitHub stars. The list is ranked by stars and refreshed nightly.

What is the most popular open source Office Suites project?

wordcraft leads this category with 17,038 GitHub stars, followed by CryptPad.

Are these Office Suites tools free?

Yes — every project listed here is open source. Some also offer paid hosted versions alongside the free self-hosted option; the licence for each project is shown on its card.