CodeRunner

Edit and run code faster

Platform

Mac

macOS

10.15 or later

Size

303.4 MB

Version

4.5

Languages

English

Overview

Simplify your software development with the lightning-fast code editor. Write, run, and debug quickly from a single app with out-of-the-box support for more than 25 languages. Fine-tune your work using 230 syntax highlighters, essential IDE features, documentation sidebar, customizable preferences, and dark/light mode. CodeRunner is a fully fledged alternative to any text editor, with developers praising its clean interface and sweet-spot of features.

Write and run code in 25+ languages
Code faster with advanced code completion
Avoid errors with instant inline feedback
Debug with breakpoints in 10+ languages

CodeRunner features

Build smarter

Get your code to working condition faster than ever. CodeRunner takes code completion, auto-indenting, and bracket management to the next level. Its smart autofill feature not only completes the string but also offers placeholders to write the entire function. Quickly switch between tabs, drag them to order, or hide them when not needed.

Beautify your code

Take noise out of the equation with over 230 syntax highlighters — all updated to the latest language specifications with customizable colors. Select a word or symbol, and then one hotkey later you’re able to view and edit local color scopes. See your current line highlighted and even customize the spacing. Switch between dark and light modes, or select a custom view theme to tie your preferred look together.

Tweak every preference

Configure CodeRunner to work exactly how you want. Don’t like auto-closing of brackets, indenting of new lines, or syntax highlighting? Simply toggle them off in the preference editor. Is auto-complete getting in the way of your custom functions? Switch it off temporarily while you work. You can even turn off auto-save if you’re just experimenting. Make CodeRunner work for you.

Debug like a dream

Produce quality code without compromise by leveraging useful debugging tools. Use the built-in web inspector to debug quickly or inject your JavaScript and CSS with simple run modes. Switch your PHP output between terminal and web mode for easy comparison. Set a breakpoint, explore the call stack, view and edit variables, and step through the code in a snap.

Search docs swiftly

Browse the online documentation for any programming language without leaving the app. CodeRunner’s new information sidebar lets you look up functions, methods, classes, and other symbols instantly. You can even add your own documentation to the lookup source, so that you spend less time switching apps and more time writing beautiful code.

Use any language

CodeRunner speaks your language, so you can drop into your workflow without a hitch. Select from more than 25 supported languages, including AppleScript, C, C++, C#, Go, Haskell, HTML/CSS, Java, JavaScript, Kotlin, LaTeX, Lua, Markdown, Node.js, Objective-C/C++, Perl, PHP, Python, Ruby, Rust, Shell Script, Swift, and TypeScript. You can even add your own languages with a simple terminal command.

Ratings and reviews

96%

1283 user ratings

Russel
May 4, 2026
Works well. I’m not a coder, but sometimes need to view and attempt to interpret code.
Christopher Jacobs
May 1, 2026
Dont do it!! When you launch it for the firsrt time, you will get litertally 90-100 modals asking if you want this app to open pretty much all the file formats on the planet… if you do this (and it will take you 20 minutes) you will f___k up your system…. they need to fix this NOW!!! Terrible terrible terrible, as Rocky wouldsay.
José Carlos Vilorio
Apr 11, 2026
Me encanta, la utilizo tanto con texto plano coomo para código en diferentes lenguajes.
BM
Apr 6, 2026
Love the app! Its great for quick editing of code files without the need for a compete ide, and also great for quickly prototyping new features and code changes. only remark is the lack of a more modern ui, but otherwise no bad points for the app. overal great experience.