Developer Brandon Thomas published on GitHub three open-source clones of Microsoft Office: WordCraft, GridCraft and DeckCraft, written in Rust with help from Anthropic’s Claude. WordCraft covers 88% of Word’s ribbon features and GridCraft handles 513 of Excel’s 523 worksheet functions, but the team rates them only 50% to 60% ready for real work. These applications directly target the Microsoft 365 subscription priced at $99.99 per year for a single user. WordCraft had collected over 12,000 GitHub stars by Wednesday, just days after launch.
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