KeyCastr, an open-source keystroke visualizer
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keycastr Version 0.9.6 Apr 19, 2018
.gitignore Xcode housekeeping Apr 1, 2017 Apply mmautner's pull request #101 manually May 16, 2018


KeyCastr, an open-source keystroke visualizer.


display preferences


Installation via homebrew cask

brew cask install keycastr

Accessibility API access

In order to work, KeyCastr must be included in the list of applications with Accessibility API access, under the Security & Privacy system preferences.


To add KeyCastr to the list click the + button and select KeyCastr from the file system.

Position on Screen

The default position is on the bottom left of your display. To modify the position of displayed keystrokes, click and drag the text like so:



  • sdeken wrote the original version.
  • akitchen fixes for more recent OS X releases and other maintenance.
  • elia created keycastr organization and forked into it.
  • lqez added a new menu bar icon.


BSD 3-Clause