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KeyViz
Keyviz visualizes keyboard and mouse actions in real time through a free, open-source tool.

About KeyViz
Keyviz is an open-source, GPL-3.0 tool that shows keypresses and mouse actions on screen in real time for an audience. Windows and macOS builds come as installers; the Linux version uses X11 and is built from source.
Pricing is not clearly stated.
Key features
- Visualizes normal keys and mouse combinations such as Cmd + Click or Alt + Drag
- Displays mouse clicks and scroll wheel movements alongside the cursor
- Changes colors for modifier versus regular keys, plus size, layout, border, and background
- Filters which keys appear using hotkey or custom filters
- Keeps a visual trail of recent inputs
- Moves the visualization to any part of the screen
- Customizes entry and exit animations with presets
- macOS requires Input Monitoring and Accessibility permissions.
KeyViz at a glance
- Website
- github.com/mulaRahul/keyviz
- Category
- Software & Utilities › Hardware & Diagnostics
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Linux, macOS, Windows
- Details verified
- Oct 22, 2026 · Official source
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
KeyViz alternatives
Tools and sites you could use instead, ranked by how closely they match.
This plugin provides real-time voice noise suppression based on Xiph’s RNNoise, with VST2, VST3, LV2, and LADSPA formats.
Deskflow lets users share one keyboard and mouse across multiple computers.
LittleBigMouse supports DPI-aware mouse movement across multiple screens.
Manage keyboard behavior across GNU/Linux, Windows, and macOS with KMonad, a keyboard manager.
Apply acceleration to mouse input in the raw input stream with Raw Accel, a driver for Windows.
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