RaspberryPiFoundation/blockly

Health v2 · maintenance only

Adoption not part of the score

13533 stars · 3872 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Blockly is a JavaScript library that adds a customizable, drag-and-drop visual programming editor to web apps, representing code concepts as interlocking graphical blocks. It is fully client-side, generates code in a target language of your choice, and powers large coding-education platforms like Scratch and Code.org.

Use cases

• add a block-based visual code editor to a web app
• build a coding education platform for kids
• let users create scripts without writing syntax
• generate code from drag-and-drop blocks
• create custom blocks for a domain-specific visual language
• build a Scratch-like programming environment

When to choose

• you need a mature, well-documented visual block editor embedded in a browser-based application
• you want users to program without dealing with syntax
• you need code generation in multiple target languages from a visual interface
• you are building an educational coding product

When to avoid

• you need a text-based code editor rather than a visual block editor
• you need server-side or native desktop editing without a browser environment
• you want an end-user app rather than a library to build your own editor
• your project requires minimal JavaScript payload and cannot afford a large client-side library

Facets

library · maturity stable

editor ui-components frontend-framework programming-language web-development frontend education programming-languages developer-tools browser cross-platform visual-programming block-based-coding drag-and-drop code-generation cs-education scratch education web-server nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="RaspberryPiFoundation/blockly")