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Open-Source AI Clones of Microsoft Office Released by Brandon Thomas

1 reports1 sources10/14/2026 updated

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AI overview

Brandon Thomas, a developer, has released three open‑source AI‑powered clones of Microsoft Office—WordCraft, GridCraft, and DeckCraft—using Anthropic’s Claude model. WordCraft covers about 88 % of Word’s features, GridCraft handles 89 % of Excel’s ribbon commands and supports 513 of 523 functions, and DeckCraft implements roughly 79 % of PowerPoint’s capabilities. All three applications run offline and are cross‑platform, supporting Windows, macOS, Linux, and BSD. However, the team’s own assessment indicates that only about 50‑60 % of the functionality is suitable for real‑world work use, suggesting that while the projects are impressive demonstrations of AI‑generated productivity tools, they are not yet ready to replace the official Office suite in most professional settings.

Written with AI from the reporting · updated 10/14/2026

Latest developmentOct 15, 05:16
Developer Releases Open-Source Clones of Microsoft Office Using AI
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  1. 1Unclassified fact stationOct 15, 00:00recorded Oct 15, 06:07single sourcerevised

    Developer releases open-source AI clones of Microsoft Office

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    Evidence & revisions · 1 source records
    Subject：
    Brandon Thomas
    Action：
    released WordCraft, GridCraft and DeckCraft
    Object：
    Microsoft Word, Excel and PowerPoint clones
    Occurred (fact side)：
    Oct 15, 00:00
    Decrypt ↗Report pageRevision 2 · currently revised
    Published (valid side)：
    Oct 15, 05:16
    First seen (known side)：
    Oct 15, 06:07
    Fact stationSingle source · one-sided claimRevised

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Oct 15
  1. DecryptRelated fact: single sourceSource report revised
    Developer Releases Open-Source Clones of Microsoft Office Using AI

    Report first recorded Oct 15, 06:07

    Brandon Thomas released WordCraft, GridCraft, and DeckCraft, free open-source clones of Microsoft Word, Excel, and PowerPoint, built with Anthropic's Claude and written in Rust. WordCraft covers 88% of Word's ribbon features, and GridCraft handles 513 of Excel's 523 worksheet functions; however, the team rates them only 50% to 60% ready for real work. These applications run natively on Windows, macOS, Linux, and BSD, and within a web browser, offering a fully offline alternative to the $99.99 annual Microsoft 365 subscription.

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