CodexLaunch IDE

An online IDE that
runs everywhere you do.

Write, run and share code in HTML, CSS, JavaScript and 20+ mainstream languages. No installs, no accounts, just a tab.

Launch IDEHow it works

Engines

Three runtimes, one editor

Web

Live HTML, CSS and JavaScript with an instant in-browser preview. No build step, no server.

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Compiled

Run C, C++, Rust, Go, Java, Kotlin, Swift, C# and more, executed in a sandboxed runtime.

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Scripted

Python, Ruby, PHP, Lua, Bash, Perl, R, TypeScript and more, ready to run from the first keystroke.

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Languages

24 languages, one keystroke away

JavaScript
TypeScript
Python
Java
C
C++
C#
Go
Rust
Ruby
PHP
Swift
Kotlin
Scala
Bash
Lua
Perl
R
Dart
Elixir
Haskell
Julia
SQL
HTML/CSS