KeyCastr

KeyCastr displays keystrokes on screen so users can share their keyboard input during demonstrations.

github.com/keycastr/keycastr
KeyCastr homepage screenshot

About KeyCastr

KeyCastr is an open source keystroke visualizer for Mac that shares keystrokes on screen when creating screencasts, presenting, or collaborating with others. It requires permission to receive events from macOS through Input Monitoring on version 10.15 and later, or Accessibility on older versions. It will never receive or display passwords when the website or application treats password entry as secure.

Key features

  • Display command keys, all modified keys, or all keystrokes
  • Option to include mouse clicks
  • Reposition display by clicking and dragging text
  • Install from GitHub release or with Homebrew
  • Support for custom visualizers built on KeyCastr
Best for: People creating screencasts, presenting, or collaborating with others who need to share keystrokes on Mac.
Watch out for
  • Display may seem not to work if the window is offscreen

KeyCastr at a glance

Type
App
Pricing
Free
Platforms
macOS
Details verified
Oct 22, 2026 · Official source
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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