* [Flyfish Viewer v2.4.0](https://github.com/flyfish-dev/file-viewer) – Offline-first universal file viewer for 190+ formats, built with a pure TypeScript core and polished Vue, React, Svelte, jQuery, and Web Components.

* [GenOffice v0.8.0](https://github.com/genspark-ai/genoffice) – AI-native office suite for macOS and Windows with AI-first editing across word processing, spreadsheets, presentations, and PDF.

* [officeParser v7.8.0](https://github.com/harshankur/officeParser) – Node.js and browser library that parses office files into a hierarchical AST with text, formatting, metadata, and attachments.

* [unioffice v2.13.0](https://github.com/unidoc/unioffice) – High performance Go library for creating and editing Office Open XML documents.

* [office-open-xml-viewer v0.83.0](https://github.com/yukiyokotani/office-open-xml-viewer) – A browser-based Office Open XML viewer that parses documents in Rust/WebAssembly and renders pages, sheets, and slides to HTML Canvas via Canvas 2D.

* [docxgo v2.14.0](https://github.com/mmonterroca/docxgo) – Production-grade Go library for creating and modifying Microsoft Word .docx (OOXML) files with clean architecture and builder API.

* [CodeSucker v0.5.0](https://github.com/fanbuz/codesucker) – Desktop app that extracts and cleans annotated code locally, generates paginated software copyright documents, and verifies results before exporting.

* [OfficeDex v0.6.9](https://github.com/officecli/officedex) – AI-native desktop workspace that generates and formats .docx, .pptx, and .xlsx from natural language.

* [SuperDoc vscode-v2.18.0](https://github.com/superdoc/docx-editor) – DOCX document engine that renders, edits, and automates real DOCX files in the browser, headless on the server, and within AI agent workflows.

* [Gander v1.13](https://github.com/mokshablr/gander) – Offline, zero-permission Android file viewer that renders PDFs, Office docs, media, and Markdown locally in a single app.