CodeRunner
CodeRunner is a macOS code editor and lightweight IDE for writing, running, and debugging code in many programming languages.
What is CodeRunner?
CodeRunner is a native macOS programming editor and lightweight IDE for writing, running, and debugging code in one app. It is designed for students, hobbyists, and professional developers who want a faster way to test scripts, build small projects, and work across multiple languages without setting up a full heavyweight development environment. CodeRunner supports running code in many languages, includes editor features such as syntax highlighting and code completion, and provides an integrated debugger and documentation sidebar to help with everyday coding tasks. It also supports searching across files and quickly navigating through project items, which makes it useful for small to medium development workflows on Mac. Published by Nikolai Krill, CodeRunner fits best for users who want a focused desktop coding tool on macOS.
Key features
- Write and run code in multiple programming languages from one editor
- Debug code with breakpoints, stack inspection, and console output
- Use code completion and syntax highlighting while editing
- Search and replace across files, folders, and open documents
- Open files and symbols quickly with keyboard-driven navigation
- View documentation in a sidebar while you work
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Safe
CodeRunner is a legitimate development app for macOS. It normally needs access to the files and folders you choose to open or run, and its behavior is consistent with a code editor and IDE. Because it executes code, the main practical risk comes from running scripts or projects you do not trust, which can affect your files or system the same way they would in a terminal. Keep your projects from trusted sources, review code before running it, and remove the app only if you no longer use it for development.
Recommendation: Keep CodeRunner if you use your Mac for programming, scripting, or learning to code. If you no longer use it, you can remove the app, but expect to lose its saved settings, custom languages, and other local editor configuration unless you back them up first.
Common paths
/Applications/CodeRunner.app
Support paths
~/Library/Application Support/CodeRunner
Preference paths
~/Library/Preferences/com.krill.CodeRunner.plist
Container paths
~/Library/Containers/com.krill.CodeRunner-setapp
Share your experience
Be the first to share your experience.