Open-source DOCX Editor

What it does

docx-editor is an open-source, MIT-licensed WYSIWYG editor for Microsoft Word documents built to run entirely in the browser. A React library that stays native todocx, no lossy round-trips, no mangled formatting. Supports real-time collaboration, track changes, threaded comments, tables, images, hyperlinks, page layout, a plugin system, i18n, and a headless API for LLM-driven edits.

• OS
  Open-source .docx editor library for building document appsMay 2026 · github.com · ▲107

  We are working on an open-source .docx editor library for apps that need to edit Word documents in the browser. We just shipped 1.0. A lot of existing approaches convert .docx into HTML and lose document semantics along the way. Our editor parses OOXML directly and uses its own rendering+layout engine to produce paged documents with html/css. Edits round-trip back to .docx, so you’re always editing the document, not its representation. The core rendering engine is framework agnostic, with React and Vue ui adapters on top. It’s Apache 2.0. Happy to answer questions.

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  DOM-docx – HTML to native, editable Word docs (MIT)Jul 2026 · github.com · ▲158

  Convert semantic HTML fragments to native, editable Word documents (OOXML) - floodtide/dom-docx

• JF
  JavaScript-first, open-source WYSIWYG DOCX editorFeb 2026 · github.com · ▲130

  We needed a JS-first WYSIWYG DOCX editor and couldn't find a solid OSS option, most were either commercial or abandoned. As an experiment, we gave Claude Code the OOXML spec, a concrete editor architecture, and a Playwright-based test suite. The agent iterated in a (Ralph) loop over a few nights and produced a working editor from scratch. Core text editing works today. Tables and images are functional but still incomplete. MIT licensed.

• EU
  Extend UI – open-source UI kit for modern document appsJun 2026 · extend.ai · ▲252

  We're open-sourcing 14 components & examples today for PDF, DOCX, and XLSX viewers, plus bounding box citations, file upload, e-signature, and more. It's MIT licensed and fully customizable. Demo video here: https://share.extend.ai/kRmSGKRF When we started, we tried every file viewer and document component library we could find. Unfortunately, none of them had all the functionality (and polish) that we wanted, so we ended up building our own for https://extend.ai/. It was only ever meant to be internal, but enough customers kept asking for it that we decided to…

• 
  Docusaurus 2.02022 · docusaurus.io · ▲711

  Build great docs websites, focus on your content - by Meta

• WI
  Word in Web – Near MS Word Parity Docx Editor in WebJul 2026 · word-in-web.com · ▲37

  Word in web is a pure JS docx editor/renderer benched against MS Word directly. This was largely inspired by Eigenpal going closed source, and some personal frustrations I had with working on complex Word templates, pleading papers, etc... and not having a clean way to view/edit them without owning MS Word (which I did just eventually buy but it sucked). This was also an exercise in highlighting the value of good evals for Agents to bench against. Instead of just throwing the OOXML standard at an agent and letting it spin, I put together a large corpus of Microsoft Word docs -…

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