Show HN: Nobie – an Excel-compatible runtime for agents and humans

Nobie is a free, Mac-based Excel-compatible spreadsheet application that prioritizes local data storage, Excel compatibility, and AI integration without requiring accounts or cloud uploads. The platform offers pixel-perfect Excel formula calculations, preserves all Windows Excel shortcuts, and allows users to integrate AI assistants like Claude and Gemini directly into their workflows while keeping files in standard .xlsx format. Additional features like AI editing, VBA macros, and multiplayer functionality are coming soon.