Software engineer Brandon Thomas, operating under the brand ArtCraft, used Anthropic's Claude Opus 5.5 to create open-source replicas of Microsoft Office. He developed three applications: WordCraft, GridCraft, and DeckCraft, which are designed to be functionally and visually similar to Word, Excel, and PowerPoint.
These tools are written in Rust and released under MIT or Apache 2.0 licenses. While the core applications are free and open-source, Thomas charges subscription fees for the generative AI features integrated within the suite.