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OneCompiler
onecompiler.com
OneCompiler - Write, run and share code online | Free online compiler with 100+ languages and databases
One Compiler helps over 12.8 million users worldwide write code online. ... Embed our Editor & Challenges as an iFrame into your website to get the code execution capabilities in minutes. Build more complex use-cases by calling our APIs from your backend applications to run code, read reports etc.,
HTML Online Editor (Compiler, Interpreter & Runner)
Write, Run & Share HTML code online using OneCompiler's HTML online Code editor for free. It's one of the robust, feature-rich online Code editor for HTML language, running on HTML5. Getting started with the OneCompiler's HTML compiler is simple and pretty fast.
Python Online Compiler & Interpreter
Write, Run & Share Python code online using OneCompiler's Python online compiler for free. It's one of the robust, feature-rich online compilers for python language, supporting both the versions which are Python 3 and Python 2.7. Getting started with the OneCompiler's Python editor is easy and fast.
JavaScript Online Compiler & Interpreter
Write, Run & Share Javascript code online using OneCompiler's JS online compiler for free. It's one of the robust, feature-rich online compilers for Javascript language. Getting started with the OneCompiler's Javascript editor is easy and fast.
Tester - HTML
Write, Run & Share HTML code online using OneCompiler's HTML online Code editor for free. It's one of the robust, feature-rich online Code editor for HTML language, running on HTML5. Getting started with the OneCompiler's HTML compiler is simple and pretty fast.
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CodeChef
codechef.com β€Ί ide
Online Compiler & IDE for Python, C++, C, Java, Rust - CodeChef
Compile & run your code with the CodeChef online IDE. Our online compiler supports multiple programming languages like Python, C++, C, JavaScript, Rust, Go, Kotlin, and many more.
People also ask

Is PlayCode's JavaScript compiler free?
Yes, PlayCode's JavaScript compiler online is completely free to use. You can compile and run unlimited JavaScript online, use npm packages, and see live preview results without paying anything. Run JavaScript online for free with instant compilation. Pro features like AI assistance and private projects are available for subscribers.
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playcode.io
playcode.io β€Ί javascript-compiler
JavaScript Compiler Online - Run JS Code Free | PlayCode
Is PlayCode's Python compiler free?
Yes, PlayCode's Python compiler is completely free to use. You can write, run, and test unlimited Python code, install pip packages, create visualizations, and see results instantly without paying anything. Pro features like AI assistance and private projects are available for subscribers.
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playcode.io
playcode.io β€Ί python-compiler
Python Online - Run Python Code Free in Browser | PlayCode
What Python version does PlayCode support?
PlayCode runs Python 3.11 via Pyodide, which is compiled to WebAssembly. You get the full Python standard library, including asyncio, json, re, datetime, collections, itertools, and more. Most pure-Python packages from PyPI are also supported.
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playcode.io
playcode.io β€Ί python-compiler
Python Online - Run Python Code Free in Browser | PlayCode
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JDoodle
jdoodle.com
Online Compiler and Editor/IDE for Java, C, C++, PHP, Python, Ruby, Perl - Code and Run Online
JDoodle is an Online Compiler, Editor, IDE for Java, C, C++, PHP, Perl, Python, Ruby and many more. You can run your programs on the fly online, and you can save and share them with others. Quick and Easy way to compile and run programs online.
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CodePen
codepen.io
CodePen: Online Code Editor and Front End Web Developer Community
Build, share, and learn JavaScript, CSS, and HTML with our online code editor.
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W3Schools
w3schools.com β€Ί tryit
W3Schools Online Code Editor - Tryit Yourself (Online Compiler)
With W3Schools online code editor, you can edit HTML, CSS and JavaScript code, and view the result in your browser. The window to the left is editable - edit the code and click on the "Run" button to view the result in the right window.
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Playcode
playcode.io β€Ί javascript-compiler
JavaScript Compiler Online - Run JS Code Free | PlayCode
This free online JavaScript compiler makes it easy to practice coding, follow tutorials, and see your code execute in real-time. Write JavaScript code, click Run, and see results instantly.
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Trinket
trinket.io
Trinket
Trinket lets you run and write code in any browser, on any device. Trinkets work instantly, with no need to log in, download plugins, or install software. Easily share or embed the code with your changes when you're done. Let's get started! Your free account will let you create trinkets, see ...
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Mimo
mimo.org β€Ί code-compilers
Free Online Code Compilers | Mimo
February 17, 2025 - Practice coding with our free online compilers for HTML, CSS, JavaScript, React, Python, and TypeScript. No installation needed - write and run code in real time.
Find elsewhere
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Playcode
playcode.io β€Ί python-compiler
Python Online - Run Python Code Free in Browser | PlayCode
Run Python code online instantly. Free Python compiler in your browser with pip packages, Matplotlib, Plotly. No setup, no downloads. Used by 1.1M+ people.
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Try It Online
tio.run
Try It Online
TIO listens: languages and features are added by request all the time. If you have a request or want to report a bug, use any of the contact options listed below. The TIO web app is free of charge, ad-free, and doesn't use tracking cookies or third-party analytic scripts.
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CodeSandbox
codesandbox.io
CodeSandbox: Instant Cloud Development Environments
Use our APIs to create isolated development environments (sandboxes) that can run any type of code you need.
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Programiz
programiz.com β€Ί c-programming β€Ί online-compiler
Online C Compiler - Programiz
// Online C compiler to run C program online #include <stdio.h> int main() { // Write C code here printf("Try programiz.pro"); return 0; } Output Β·
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Reddit
reddit.com β€Ί r/compilers β€Ί any free, or cheap, online compilers for python and java?
r/Compilers on Reddit: Any free, or cheap, online compilers for Python and Java?
October 13, 2023 -

I'm trying to make an online editor and compiler for my students to run code on. Yes, there are some out there but they don't fit my needs.

I've been able to use OneCompiler's API through RapidAPI but it costs a bit too much. Is there an open source compiler I can run on a server and connect to? I've tried use Codex-API but can't get the darn thing to work. It needs me to setup a docker container and such but I get errors. Not sure if it's a me thing or not so I'm looking for guidance from y'all with other possible solutions that I might be missing. Thanks.

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Online Python
online-python.com
Online Python - IDE, Editor, Compiler, Interpreter
Build, run, and share Python code online for free with the help of online-integrated python's development environment (IDE). It is one of the most efficient, dependable, and potent online compilers for the Python programming language. It is not necessary for you to bother about establishing a Python environment in your local.
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CodeTester
codetester.io
Code Testing Widget
Free online code testing and remote execution tools Β· Run HTML Β· Just run some code and see the output - with support for C, C++, Python, Ruby, Javascript, and Java Run Code Β· A tool that lets you create custom online tests to screen developers Coding Assessment Tool Β·
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Playcode
playcode.io β€Ί html-runner
HTML Runner - Run HTML Code Online Free
Run HTML code online instantly with live preview. Free HTML runner with CSS and JavaScript support. Test your HTML code in seconds, no setup required.
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JSFiddle
jsfiddle.net
JSFiddle - Code Playground
JSFiddle - Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle.
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Runmycode
runmycode.online
RunMyCode Online
RunMyCode Online is a free and open-source tool to compile and run code online, directly from GitHub, GitLab, BitBucket, and more.
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Programiz
programiz.com β€Ί python-programming β€Ί online-compiler
Online Python Compiler (Interpreter) - Programiz
Write and run your Python code using our online compiler. Enjoy additional features like code sharing, dark mode, and support for multiple programming languages.
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OneCompiler
onecompiler.com β€Ί html
HTML Online Editor (Compiler, Interpreter & Runner)
Write, Run & Share HTML code online using OneCompiler's HTML online Code editor for free. It's one of the robust, feature-rich online Code editor for HTML language, running on HTML5. Getting started with the OneCompiler's HTML compiler is simple and pretty fast.