Code Editors

A browser-only Jupyter distribution for running interactive notebooks from static web files.

Work with notebooks, code files, consoles, and terminals in a browser-based interactive development environment.

Edit, run and share short Kotlin examples in a browser without first creating a full project.

A desktop PHP scratchpad for evaluating snippets in a Laravel sandbox or within local and SSH-connected projects.

Design mobile app screens in a browser and program their behavior by assembling visual blocks.

Edit code with a fast desktop editor whose multiple selections can apply the same change in several places.

Edit code on iPhone or iPad with broad syntax highlighting, remote file access, and an SSH terminal.

A lightweight cross-platform editor/IDE with configurable compile, build, and run commands.

A source editor for LilyPond scores with music view, MIDI playback and score-building tools.

A Windows Python IDE pairing a script editor with an interpreter, debugger, project tools and unit-test interface.

Compile, run, debug, and share small programs in a browser-based editor.

Open a Git repository in a browser IDE backed by a Kubernetes development workspace.

A beginner-focused Python IDE that makes variables and program execution visible while you learn.

A Scratch-derived block-programming editor with a compiled runtime and JavaScript extension support.

A graphical environment for building measurement, instrument-control, and test applications with the G language.

A hosted notebook editor for Python and data work, with SQL cells, collaboration, and interactive reports.

A browser editor for micro:bit projects with Blocks, JavaScript, Python, and a device simulator.

An immersive Smalltalk environment where a live image, code tools, and debugger support immediate feedback.

A browser-based Dart and Flutter workbench for running small programs and UI samples.

A cross-platform C, C++, and Fortran IDE built around configurable compiler and debugger integrations.

A modal, configurable text editor for programming and general text work.

A Windows source-code editor with syntax highlighting, tabbed files, and search across documents.

Edit source files and send build or run output to an integrated pane on Windows or Linux.

A browser-based Elixir notebook for executable code and Markdown, with interactive results and collaboration.