Yack

Yack is a lightweight, open-source macOS application that provides quick access to ChatGPT directly from the menu bar. Built with Rust, it occupies less than 10 MB of disk space, offering a fast and minimalist alternative to heavier Electron-based chat clients. The app is designed for both Apple Silicon and Intel-based Macs, emphasizing speed and minimal system resource usage.

Yack prioritizes user privacy by storing all conversation data locally on the device, avoiding remote server storage. Its keyboard-first interface allows for mouse-free interaction, supporting rich keyboard shortcuts to enhance workflow efficiency. Users can customize the appearance with light, dark, and colorful themes. Markdown rendering is supported, enabling formatted text with bullets, lists, code blocks, and tables.

While Yack currently serves as a streamlined front-end for ChatGPT, the developer has announced upcoming features including cross-app integration, prompt templates, and search functionality. As an open-source project, its code is publicly available, and it appears to be free to use, though users likely need their own OpenAI API key to access ChatGPT—associated costs should be verified on the OpenAI pricing page.