IDEs and code editors

Browser IDE with playgrounds for 15+ languages and databases like Postgres, MongoDB and Redis.

Chrome sidebar extension that launches throwaway Linux machines and browser IDEs on demand.

Browser compiler and editor for 60+ languages, plus a REST API for running code remotely.

Client-side playground for 90+ languages and frameworks with sharing, embeds and GitHub Pages deploys.

• No sign-up
• Open source

Browser compiler for running Java, Python, C++, JavaScript and dozens of other languages.

Browser IDE and debugger for 40+ languages with many libraries preinstalled and tutorials.

Browser-based dev environment for building web apps on a preconfigured cloud server.

Google's official IDE for building Android apps, on Windows, macOS, Linux and ChromeOS.

• Open source

Apache IDE and application platform, mainly for Java development.

• Open source

Text and code editor for macOS whose free mode keeps the core editing features.

Java IDE for beginners with a visual class view, used widely in teaching.

Open-source code editor for front-end web work, with extensions.

• Open source

Collaborative cloud workspace with an Ubuntu environment, Jupyter, LaTeX, SageMath and Python.

Open-source C, C++ and Fortran IDE for Windows, macOS and Linux.

• Open source

Browser workspace for building UI components in isolation with stories, tests and npm publishing.

Open-source browser IDE that runs team workspaces on Kubernetes, with a Red Hat hosted instance.

• Open source

Browser IDE for Flutter that builds Android and iOS apps without needing a Mac.

Cross-platform desktop IDE for Free Pascal, compatible with Delphi code, for rapid app building.

Cloud development environment in the browser with an AI assistant built in.

Browser development environment for writing and running PHP projects.

Open-source front-end playground with a Monaco editor, live preview, SCSS/TS support and AI chat.

• No sign-up
• Open source

Cloud workspace for writing, running and sharing code in many programming languages.

Browser IDE that runs MATLAB-style .m code with GPU acceleration through WebAssembly and WebGPU.

• No sign-up
• Open source

Snippet playground for many languages, with beginner and intermediate courses alongside.

• No sign-up

Browser SQL playground with a JOIN visualiser, formatter, CSV/JSON converters and practice questions.

• No card
• No sign-up

Browser IDE for building and deploying full-stack Node.js apps with popular frameworks.

Desktop text editor for code with extensive customization through settings and packages.

Microsoft desktop code editor with debugging, Git integration and a large extension marketplace.

Microsoft's full IDE for C#, C++, Python and more, covering desktop, mobile, web and cloud apps.

Openly licensed builds of the VS Code editor with Microsoft telemetry removed.

• Open source