injoffice

InjOffice is a free, open-source desktop editor for Word, Excel, PowerPoint, and PDF files, along with the open-source libraries that power it. The application allows users to edit Office files manually or through AI agents, with agents proposing changes that users review before any modifications are written. The rest of the file remains unchanged during this process. The software is available for macOS, Windows, and Linux, and is licensed under Apache-2.0. Files never leave the user's computer, ensuring privacy. The libraries are TypeScript packages for browser and Node environments, and Go modules for servers, enabling developers to build document workflows. The agent workflow involves opening a session on the file's bytes, planning a change set tied to the file's revision and fingerprint, validating, previewing, and diffing before writing, approving the exact change set, committing only if the file has not changed, and verifying the written file. The editor and libraries are the same engines, so changes made in one can be made in the other. Coverage is partial and growing, with support for specific operations in each format.