Scratch - Scratch is the programming language & online community where young people create stories, games, & animations.
TurboWarp - TurboWarp is a Scratch mod with a compiler to run projects faster, dark mode for your eyes, a bunch of addons to improve the editor, and more.
CodeKit - CodeKit allows you to optimize the performance of your website by automatically and efficiently compiling a variety of popular languages.
eBlock - A Scratch-based application with which you can program a wide variety of devices (Arduino, BBC micro:bit, STM32, SAMD51, ESP32, NRF5 ... )
MakeCode - Free, open source platform for creating engaging computer science learning experiences
Gandi IDE - Gandi IDE is a Scratch mod, it's a simple but powerful online game engine. An editor, interpreter, compiler, assets market, and MMO server are built inside. Realtime code, create and learn together right in your browser.