GenOffice

GenOffice is a free, open-source alternative to Microsoft Office for macOS, Windows and Linux. It opens and saves native .docx, .xlsx and .pptx files, edits PDF, Markdown and HTML, and puts an AI agent next to every document — not a chat box bolted on the side, but an editor that reads the file, makes the change, and shows you exactly what it touched. ODF files (.odt, .ods, .odp and the .ott/.ots/.otp templates) open as editable OOXML copies, and so do legacy Word .doc/.dot, Excel 97 .xls and PowerPoint 97–2003 .ppt files and Hancom documents (.hwp, .hwpx); the imports are open-only — saving writes OOXML, never the source format.

• Real formats, byte-preserving. Only what you edit is rewritten. Everything else in the file survives byte-for-byte, so documents keep working in Word, Excel and PowerPoint.
• AI you can review. Edits land as tracked changes and diffs with one-click rollback. Spreadsheets get live formulas, not pasted numbers. Decks and pages are generated onto the canvas and stay fully editable. Hide a Docs selection or a Sheets cell range from the model and the AI sees only a named placeholder; the original words stay in the file and come back. Hiding covers this app's AI — the CLI, MCP tools and headless export read the file directly and still see these words.
• Local by design. Files open, edit, save and convert on your machine. PDF → Word / Excel / PowerPoint, Markdown → Word and HTML → Word all run on-device. Only the AI calls leave the machine, to the provider you choose.
• Find files by what they say. The home screen searches the names, folders and full text of your .docx, .xlsx, .pptx, PDF, Markdown and HTML files from a local SQLite index, CJK included. Optionally, the top hits are reranked by TypeSafe Jev, the System One judgment model, so the file that answers your question comes first.
• Ask your files, with sources. Star a set of documents and Ask AI on the home screen answers questions across them, citing the file behind every claim so you can open it and check.
• Your keys or none. Sign in with Genspark and skip keys, or bring your own key for Claude, OpenAI, Gemini, DeepSeek, Kimi, GLM, Qwen, Doubao, MiniMax, Grok, Mistral, OpenRouter, Requesty, Opper, Cheaper Inference, Atlas Cloud, or any OpenAI-compatible endpoint, local servers included.
• Scriptable and agent-ready. The app ships a genoffice command line and a skill for Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, OpenCode and Windsurf, so a coding agent can create, convert, read and edit real Office files on your machine without opening a window.

Get it: macOS (Apple Silicon and Intel) · Windows (x64 and Arm) · Linux (deb, rpm, AppImage) — details and requirements in Download.

Demo

Six apps, one AI panel, a file search reranked by TypeSafe Jev, an Ask AI that answers from your starred files with sources, and a command line for your coding agent. Every screenshot is the real app on macOS, with the AI driven from the prompt you can read in the panel.

1 · Docs — open and edit .docx with an AI you can review

2 · Sheets — .xlsx with live formulas and charts, not pasted numbers

3 · Slides — from a prompt to a .pptx deck

Slide Show → Record narrates the deck slide by slide, with pause and resume. The narration and the auto-advance timings it measures are saved into the .pptx, and PowerPoint plays them back the same way.

4 · PDF — edit PDF text in place, convert PDF to Word on-device

5 · HTML — an AI page and UI builder, design brief first

Say what the page is for and who it is for. The AI proposes a design brief first — hook, palette, typography and style directions — then builds a single self-contained .html file against those tokens.

6 · Markdown — a block editor over plain .md, with Ask AI

Linked notes, the way Obsidian does it. [[wiki links]] click through to the note they name, typing [[ offers note-name completion, and ![[…]] embeds a note or a picture inline. A Backlinks panel lists every note that points at the open one, and the Graph view maps the links of the whole vault.

7 · Search — find the file that answers the question, with TypeSafe Jev

Every file in your work folder is indexed on-device: names, folders and the extracted text of Word, Excel, PowerPoint, PDF, Markdown and HTML files, in a SQLite full-text index with CJK-aware tokenizing. Switch on Jev search reranking and the top 20 local hits are judged by TypeSafe Jev, the System One model that returns one calibrated relevance score per document in a single call instead of generating text. The list is reordered by that score; if the call fails or times out, the local order stays.

8 · Ask AI — your starred files, answered with sources

Star the files you work with and the home screen's Ask AI treats them as a knowledge base. Ask a question in plain language; the agent searches the starred files, reads the ones it needs and answers with a citation after every claim. Click a citation and the file opens in the right app. Attach files to the question by dragging, pasting or from the + menu — images go to the model as visual input — and every question is kept as its own conversation: switch between them, start a new one, delete one, the list survives a restart.

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