Try it — no account needed

Everything below is free to use right now. Code in real languages, run simulations, and explore the tools our students use every day. Sign up free when you want to save your work.

Code Editors

Real programming languages, running in your browser. Python, PyGame, JavaScript and C# — most platforms stop at Python or block-based coding.

Python Interpreter

Write and run real Python in your browser — full input/output support, nothing to install.

Fully free — no account needed

PyGame Editor

Build games and graphics with PyGame, running entirely in the browser.

Free to use — sign up to save

JavaScript Editor

A full JavaScript editor with live console output — perfect for learning web programming.

Free to use — sign up to save

C# Editor

Write and run real C# — a language most platforms don't offer at school level.

Coming soon to guests

GCSE Visualisers & Tools

Interactive visualisers built for the GCSE Computer Science specification.

Logic Gates Simulator

Build and test digital circuits with drag-and-drop logic gates.

Fully free — no account needed

Sorting Algorithms

Visualise bubble, merge and insertion sorts in action.

Fully free — no account needed

CPU Fetch–Decode–Execute

Step through the FDE cycle inside a visual CPU.

Fully free — no account needed

A-Level Tools

Simulators and calculators covering the trickiest A-Level topics.

Turing Machine Simulator

Program and run your own Turing machines.

Fully free — no account needed

Creative Studios

Design studios where students build animations, apps, websites and artwork.

Animation Studio

Create keyframe animations with layers, timelines and export.

Coming soon to guests

Mobile App Builder

Design working mobile apps with no code — 10+ templates included.

Coming soon to guests

Web Builder

Build real web pages with a visual HTML & CSS editor.

Coming soon to guests

Image Editor

Draw and edit pixel graphics with layers and tools.

Coming soon to guests

Challenges & Practice

Daily practice with instant AI marking.

Daily Challenge

A new coding challenge every day, marked instantly by AI.

Coming soon to guests

Free Resources

Exam-board-aligned revision material, completely free.

Free Revision Resources

Free GCSE practice papers, five-a-day questions and worked solutions for OCR, AQA and Edexcel.

Fully free — no account needed

Like what you see?

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