Blockly

A JavaScript library for building visual programming editors

Screenshots

Hunter's comment

Here is a platform that programmers and developers wuld be interested in. There might be many apps similar to this but I thing this is quite unique in a way.

Blockly is library that adds a visual code editor to web and mobile apps. The Blockly editor uses interlocking, graphical blocks to represent code concepts like variables, logical expressions, loops, and more. It allows users to apply programming principles without having to worry about syntax or the intimidation of a blinking cursor on the command line.source

Link

https://developers.google.com/blockly/