Keyviz is a free and open-source tool designed to visualize keystrokes and mouse actions in real-time. Its main purpose is to give audiences a real-time look at inputs during screen-shares, making it easier to highlight shortcuts and improve engagement.

Key features include visualizing keyboard inputs and mouse actions such as clicks and scroll wheel movements alongside the cursor. Users can customize keycap style, size, color, border, icon, and almost everything else. The tool also offers preset entry and exit animations for how inputs appear.

Keyviz works by processing all keystrokes locally, ensuring privacy as data is never sent over the internet. It includes input filtering capabilities, allowing users to define hotkey or per-key filters to display only relevant shortcuts.

The benefits include enhanced clarity for viewers during presentations or tutorials, making it ideal for screen-sharing scenarios. Use cases involve demonstrating keyboard shortcuts in real-time to improve audience understanding and engagement.

Target users include presenters, educators, and developers who need to showcase inputs during screen-shares. The tool is available for Windows and macOS platforms and is community-driven with full transparency.