Plank is a fast-moving AI agent designed for coding tasks, exclusively available on macOS. Built on Rust and the ds4 C reference engine, it offers a range of features such as an interactive coding environment with a terminal-based UI, one-shot headless mode, and built-in tools for file manipulation and web browsing. The application supports advanced functionalities like multi-threading, Git-style diff cards, and real-time notifications, enhancing user experience during coding sessions.

With a focus on user interactivity, Plank allows for concurrent task handling, enabling users to queue prompts while the agent processes previous requests. Unique features include a markdown-rendering TUI, checkpointing capabilities, and the ability to manage side questions without interrupting ongoing tasks. Users can also enjoy a built-in gaming experience during long processing times, making Plank a comprehensive tool for developers.