Nobie

Nobie is a macOS application designed for working with Excel-compatible xlsx files locally. It is developed with input from the Excel community and emphasizes preserving the familiar experience of using Excel, including maintaining all Windows Excel shortcuts and keybindings. The tool is tailored for users who require high performance and pixel-perfect fidelity when handling spreadsheets, ensuring that every formula and cell is calculated correctly and that files remain fully compatible with Excel.

A notable feature of Nobie is its commitment to user privacy and data security; all operations are performed locally on the user's Mac, with no data ever leaving the device. There are no servers, uploads, or third-party processing involved, and no account is required to use the application. Users retain complete ownership of their data, with files always remaining in the standard xlsx format, allowing for seamless interoperability with Excel and avoiding vendor lock-in or proprietary formats.

Nobie integrates with AI models such as Claude, Codex, and Gemini, allowing users to connect their preferred AI directly to their spreadsheets. This AI-first approach provides flexibility in leveraging AI capabilities while ensuring that connections are established directly and locally, without intermediaries.

Currently, editing features, support for VBA and macros, and multiplayer capabilities are indicated as forthcoming. Nobie is targeted at users who value speed, accuracy, and privacy in managing xlsx files on Mac, particularly those with established Excel workflows and preferences.