Yup, code.org uses Blockly. Source: I worked on the original "Hour of Code". Source Code: https://github.com/code-dot-org/code-dot-org https://github.com/code

Yup, code.org uses Blockly. Source: I worked on the original "Hour of Code". Source Code: https://github.com/code-dot-org/code-dot-org https://github.com/code-dot-org/code-dot-org