genoffice

GenOffice is a desktop office suite (documents, spreadsheets, presentations, PDF) with AI editing built into the core workflow instead of bolted onto a sidebar. It reads and writes Microsoft formats, including byte-preserving .docx round-trips, and does real PDF editing, not just annotation. The code is Apache 2.0, the app is a free download, and local document editing costs nothing.

There's nothing to host: prebuilt installers cover macOS, Windows, and Linux, and you can build from source (it's a real codebase, not a shell around a download). AI edits are block-level with snapshots and diffs, so you can review and revert what the model changed rather than trusting it blindly.

As a free local Office alternative it's adoptable today, closest in spirit to OnlyOffice. Solo and small teams can use the editor for free; budget Genspark Plus at $24.99/mo if the AI is the point. If you need AI on your own API keys or fully offline, this isn't it: every model call routes through Genspark's proxy and account system.

The catch is in what the README doesn't say: every AI feature burns Genspark credits. The free account's 100 credits a day is a trial allowance, not a working budget, and an ee/ directory already reserves space for a paid enterprise edition. The office suite is free. The thing that makes it different is metered.