Captin

Captin is a macOS‑only utility that displays the current state of the Caps Lock key. It runs in the background and provides a visual indicator, allowing users to see at a glance whether Caps Lock is enabled or disabled. The tool is intended for anyone who frequently types and wants to avoid accidental uppercase input, particularly in environments where the Caps Lock key is not easily noticeable.

The application is packaged as a stable release and does not depend on external libraries or services. Its implementation focuses solely on monitoring the keyboard state and updating the on‑screen indicator in real time. Because it is limited to macOS, it integrates with the operating system’s native UI conventions.

Captin’s purpose is straightforward: to give a clear, persistent cue about Caps Lock status without requiring additional configuration or third‑party extensions. It is suitable for users who need a simple, reliable way to keep track of this specific keyboard toggle.