OneCompiler is an online compiler that helps users to write, run and share code online. The way we learn programming has changed drastically over the past few years. Users are using mobile devices, tablets, Chromebooks, etc., to learn programming. Unfortunately, the majority of programming languages support only x86 architectures, so they are limited to being installed on Laptops & Desktops. Installations are not easy and add a steep learning curve for beginners.

OneCompiler removes all these struggles & limitations by providing an online compiler platform. It's so fast that it feels like it's running locally. We run your code on powerful cloud servers with a horizontally scalable architecture to achieve cutting-edge speed.

BUILD APPS AND WEBSITES WITH AI

OneCompiler also helps you build complete apps and websites with AI. Describe what you want in plain English, and the AI app builder generates the code for you. You can then edit it, refine it visually, and publish it to a live URL with free hosting built in — no setup, no server configuration, no separate tools. Whether you're prototyping an idea, building a portfolio project or shipping a side project, vibe coding on OneCompiler takes you from a prompt to a working, shareable app in minutes. AI-generated code is a starting point, so review it before you ship.

BUILT FOR CODING ON YOUR PHONE

Practice programming on the bus, finish an assignment without a laptop, or test a quick snippet anywhere. OneCompiler runs well on low-end and older Android devices because your code compiles on our cloud servers, not on your device — so nothing slows your phone down and nothing takes up your storage.

100+ PROGRAMMING LANGUAGES

OneCompiler supports more than 100+ programming/web/database languages including all popular languages like Java, Python, C, C++, NodeJS, Javascript, Groovy, Jshell & Haskell, TCL, Lua, Ada, Common Lisp, D Language, Elixir, Erlang, F#, Fortran, Assembly, Scala, Php, Python2, C#, Perl, Ruby, Go, R, VB.net, Racket, Ocaml, MySQL, SQLServer, Oracle, PL/SQL, PostgreSQL, HTML, React, Angular and many more.

Use OneCompiler as your Java compiler, Python compiler, C compiler, C++ compiler, JavaScript editor or online SQL editor. Run Java programs, execute Python scripts, compile C and C++ code, query MySQL and PostgreSQL databases, and preview HTML, CSS and React — all from a single app, with no installation and no configuration.

WHO USES ONECOMPILER

Students running programming assignments without a laptop. Candidates preparing for coding interviews and placement tests. Developers testing a snippet on the move. Beginners learning their first programming language. Teachers sharing runnable examples with a class.

If you have ever needed to run a piece of code and had only your phone with you, OneCompiler is built for you.

FEATURES

- Run code in 100+ programming, web and database languages
- AI app builder — generate a working app or website from a prompt
- Free hosting on a live, shareable URL
- Full code editor with syntax highlighting
- Standard input support for programs that read user input
- Share your code and its output in a tap
- Works on low-end and older Android phones
- Free to use

Download OneCompiler and start writing code today.