Edit and run code in any programming language with just a single click. With CodeRunner, it has never been easier to write and test code, run scripts, work with algorithms, or simply experiment with a new coding or scripting language.

Run Your Code Instantly
• CodeRunner was built on the principle that you should be able to run your code instantly, in any language. CodeRunner can run code in 23 languages out-of-the-box, and can be easily extended to run code in any other language.

IDE-Level Code Completion
• Any programmer knows the importance of good code completion. That's why CodeRunner supports full-blown IDE-level code completion for most languages, that includes fuzzy-search, tab-selectable placeholders, and documentation snippets.

Debugging with Breakpoints
• New in CodeRunner 2.2, you can set breakpoints and step through code line by line. Just click the text margin to set a breakpoint and start debugging. Explore the call stack, view and edit local variables, and leverage the full power of the debugger by issuing debugger commands. Debugging code in any language has never been this convenient.

Supported Languages for Running Code
• AppleScript, C, C++, C#, Go, HTML/CSS, Java, JavaScript, LaTeX, Lua, Markdown, Node.js, Objective-C/C++, Perl, PHP, Python, Ruby, Rust, Shell Script, Swift, and user-added languages.

For a full list of supported languages and features, please visit

What's New

Version 2.3

- Support for the Touch Bar on the new MacBook Pro.
- Improved state restoration. Previously open windows, documents, and associated states are now fully restored between app launches.
- New indentation preference makes it easy to set a preferred indentation without modifying each language configuration separately.
- Smarter behavior of the tab and backspace keys when dealing with spaces-indentation.
- Expanded support for character encodings, and improved automatic detection of encoding when opening documents.
- Indentation of wrapped lines in the editor to reduce clutter.
- Print now includes syntax highlighting and line numbers.
- More neatly organized list of open documents under the Window menu and when right-clicking the dock icon.
- Ability to initiate running of code when right-clicking a tab.
- Text find shows the number of occurrences and highlights all results.
- Wrap lines preference affects the console in addition to the editor.
- Lots of minor improvements and bug fixes.

Ratings and Reviews

4.5 out of 5

26 Ratings

26 Ratings

Fantastic lightweight editor+runner

nixter 756398

Developers will always scoff at apps like these (especially ones whose primary notability derives from the Mac App Store—normally a bit sketchy), which make you pay for what you could likely get for free from such popular editors as Sublime, Atom, Notepad++, Vim, etc. But I can whole-heartedly vouch for the legitimacy of Coderunner on all fronts. It is virtually bug-free, has a dead-simple interface, is extremely fast, is delightfully customizable, has excellent syntax highlighting for a good variety of languages, and most importantly, lets you run your programs with the touch of a button, no strings attached.

I personally use it for small programs and self-contained bits of code—it serves as an excellent, speedy testing groundy to dump snippets into or to build up sections of a larger project. It is also a fine editor for HTML and Markdown, as it renders it in the output window when you press run. Of course, I’ll tend toward full IDE’s for larger, more interconnected projects, but when it comes to single-file programs, I find it faster and more pleasant than the more popular editors.

Exactly what I needed, works perfectly


I read the reviews, skeptic about what other people were saying, crashes, slow, clunky, but I’m not having any of those issues. Works perfectly fine for me!

Also, this text editor has everything I was looking for to program Python, and it’s very user friendly. Great for beginners!

Great Tool for testing and learning


I have used CodeRunner 2 over the past year as a tool for learning new programming languages. The interface is simple, has a large amount of languages that you can use, and is a great value for the cost. Appreciate easy to use apps like this. keep up the good work


Nikolai Krill
55 MB
Developer Tools
Age Rating
Rated 4+
© 2017 Nikolai Krill


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer