Yes, KeyCastr is completely free to use. It is also open source, so you can inspect and contribute to the code.

How do I uninstall KeyCastr?

Open Terminal and run `brew uninstall --cask keycastr`. Homebrew will remove KeyCastr and all associated files cleanly. You can verify it was removed by running `brew list`.

What are alternatives to KeyCastr?

There are several system utilities apps available for macOS. Browse the System Utilities category on Bundl.run to compare features, popularity, and install counts for similar tools.

How do I update KeyCastr to the latest version?

Run `brew upgrade --cask keycastr` in Terminal to update to the latest version. You can also run `brew outdated` to check if an update is available.

Does KeyCastr work on Apple Silicon (M1/M2/M3/M4)?

Yes, KeyCastr can be installed on both Apple Silicon and Intel Macs via Homebrew. Homebrew automatically handles the correct version for your hardware.

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PublishedJanuary 1, 2026•UpdatedApril 9, 2026

KeyCastr

Name: KeyCastr
Availability: InStock

Open-source keystroke visualizer

System UtilitiesFreeOpen Source

KeyCastr screenshot — KeyCastr — Official Website

What is KeyCastr?

Open-source keystroke visualizer

Install with Homebrew

brew install --cask keycastr

How to Install KeyCastr on Mac

Follow these steps to install KeyCastr using Homebrew, the most popular package manager for macOS. This works on both Apple Silicon (M1/M2/M3/M4) and Intel Macs.

1
Open Terminal
Launch Terminal from your Applications > Utilities folder, or press Cmd + Space and type "Terminal".
2
Install Homebrew
If you don't have Homebrew yet, paste the install script from brew.sh into Terminal and follow the prompts.
3
Run brew install --cask keycastr
Paste the following command into Terminal and press Enter:
brew install --cask keycastr
4
Verify Installation
Run `brew list` to confirm keycastr is installed, then try `keycastr --version` to check the version number.
5
Launch KeyCastr
Run `keycastr` in your Terminal to start using it.

Troubleshooting

• If you see a permission error, try prefixing the command with sudo.
• If Homebrew can't find the package, run brew update first to refresh the package list.
• On Apple Silicon Macs, make sure Homebrew is installed at /opt/homebrew (the default for M-series chips).

Key Features

Easy installation via Homebrew

Regular updates and maintenance

Free to use

Open source codebase

Pros

✓Simple one-command installation
✓Well-maintained and regularly updated
✓Completely free to use

Cons

✗Requires Homebrew to be installed
✗macOS only

Video Tutorials

Getting Started with KeyCastr

Andrew Tsai's Tips16.9K views

Install and Display Keystrokes on macOS Screen for Free 2025 | KeyCastr – Open Source Keystroke Visu

FewSteps • 139 views

Install KeyCastr in Mac Mojave

Tijo Kuriakose • 1.2K views

Keycastr downloading and installing

A B Hetzel • 3.8K views

Frequently Asked Questions about KeyCastr

Open Terminal, install Homebrew if you haven't already (visit brew.sh), then run `brew install --cask keycastr`. The app will be downloaded and installed automatically. You can then run `keycastr` from Terminal.

About the Author

Jordan Kim

Productivity & Workflow Analyst

Productivity ApplicationsNote-Taking & Knowledge ManagementTask & Project Management

8+ years in operations management · PMP certified

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Read our complete guide to the best system utilities for Mac

PublishedJanuary 1, 2026•UpdatedApril 9, 2026

KeyCastr

Open-source keystroke visualizer

System UtilitiesFreeOpen Source

What is KeyCastr?

Open-source keystroke visualizer

Install with Homebrew

brew install --cask keycastr

How to Install KeyCastr on Mac

Follow these steps to install KeyCastr using Homebrew, the most popular package manager for macOS. This works on both Apple Silicon (M1/M2/M3/M4) and Intel Macs.

1
Open Terminal
Launch Terminal from your Applications > Utilities folder, or press Cmd + Space and type "Terminal".
2
Install Homebrew
If you don't have Homebrew yet, paste the install script from brew.sh into Terminal and follow the prompts.
3
Run brew install --cask keycastr
Paste the following command into Terminal and press Enter:
brew install --cask keycastr
4
Verify Installation
Run `brew list` to confirm keycastr is installed, then try `keycastr --version` to check the version number.
5
Launch KeyCastr
Run `keycastr` in your Terminal to start using it.

Troubleshooting

• If you see a permission error, try prefixing the command with sudo.
• If Homebrew can't find the package, run brew update first to refresh the package list.
• On Apple Silicon Macs, make sure Homebrew is installed at /opt/homebrew (the default for M-series chips).