Memos is an open-source, self-hosted note-taking app that brings your everyday thoughts together in a personal timeline. Your data stays yours, and you choose what to keep private or share.
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Go language library for reading and writing Microsoft Excel™ (XLAM / XLSM / XLSX / XLTM / XLTX) spreadsheets
An open-source, clean-room reimplementation of Microsoft Word in pure Rust
Free, open-source AI Office suite: Docs, Sheets, Slides, PDF, Markdown and HTML editors with a built-in AI agent, plus a `genoffice` CLI and agent skill so Claude Code, Codex and Cursor can create and edit real .docx/.xlsx/.pptx files locally. Bring your own key. macOS, Windows & Linux.
GridCraft: an open-source, clean-room spreadsheet (Microsoft Excel-style) in pure Rust. By ArtCraft.
We're rebuilding and open-sourcing the world’s software from scratch.
DIY Presentation Micro-Framework
Open XML SDK by Microsoft
Presentations and slide shows: an open-source, clean-room reimplementation of Microsoft PowerPoint in pure Rust. Part of the ArtCraft Crafting Apps.
Lightweight and fast library written in C# for reading Microsoft Excel files
Elegant Microsoft To-Do desktop app
SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permission handling. It also makes use of documented standards (IMAP, CalDAV, CardDAV, etc.) and thereby provides native connectivity (without plugins) to many clients such as Microsoft Outlook, Apple iCal, the iPhone, Mozilla Lightning, and a plethora of mobile devices.
- sogo
- objective-c
- groupware
- angularjs-material
Fast and easy to use .NET library that creates or modifies Microsoft Word files without installing Word.
A C++ library for reading, writing, creating and modifying Microsoft Excel® (.xlsx) files.
- excel
- cpp
- cpp17
Ruby gem & CLI to convert Word (.docx) documents to Markdown. Superseded by word-to-markdown-js at word2md.com
- converter
- word
- microsoft-word
- markdown
A set of tools for graph layout and viewing
🌌 Extend and automate Microsoft Office applications using NetOffice framework.
- netoffice
- vsto
- interop-assemblies
- excel
C++ library for creating and modifying Microsoft Word (.docx) files
- cpp
- cpp-library
- docx
- docx-files
TranslatedNew tab page for 蓝色大肥鱼 (Blue Fat Fish, "blue big fat fish"): a blue-background toy box + custom wallpapers/tags, purely local, works even offline. Now available on the Microsoft Edge Add-ons store.
- browser-extension
- chrome-extension
- edge-addons
- edge-extension
PowerPoint .NET library for reading, modifying, and generating PPTX presentations without Microsoft Office
- openxml
- powerpoint
- pptx
- dotnet
🤖 Bring the power of ChatGPT to Microsoft Word
Go library for reading and writing Microsoft Docx
- doc
- document
- docx
- go
Monorepo containing Keadex applications and libraries.
- docusaurus
- microfrontend
- rust
- tauri
Fast and reliable way to work with Microsoft Excel™ [xlsx] files in Golang
- xlsx
- ooxml
- openxml
- spreadsheet