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// Press "Run" or hit Ctrl + Enter to compile & execute.

A unified, zero-install interactive coding environment crafted for learning, rapid prototyping, interview prep, and instant algorithm validation.
No software installations, compiler paths, or toolchain setups. Run Python 3, Node.js, and client-side web components with zero cloud latency.
Practice relational queries instantly with pre-loaded corporate schema tables including Employees, Departments, and Salary ranks.
Built with strict iframe sandboxes, loop timeout protection, and automated rate-limiting to maintain reliable execution across any device.
input() or C++ cin.
Ctrl + Enter (or Cmd + Enter on macOS). Inside the editor, pressing Tab inserts 4 spaces properly indented instead of leaving the textarea.
Browser-based code playground. Really executes Python (Skulpt), JavaScript, SQL (SQLite WASM) and HTML/CSS with live output and STDIN, and ships annotated reference programs for C, C++, Java, C#, Go, Rust, PHP and Vue.
CodeStudio Playground is one of 50 free tools from CRMTECH Solutions. See all Developer & Data tools or browse every tool.
Yes. CodeStudio Playground is free for everyone and needs no sign-up to use. An account is only needed to export, download or print, because every export is recorded.
No. CodeStudio Playground works inside your web browser, so the files you open are processed on your own device. If you sign in, the work you save (such as drafts and registers) is also kept in your account so it follows you to other devices.
Yes. It works in current versions of Chrome, Edge, Safari and Firefox on phones, tablets and computers, with nothing to install.