Scrotchh

Gandi IDE is an in-browser game engine, a mod of MIT Scratch with collaboration features that allow scratchers to design and code together in real-time. Gandi also contains many extensions to help developers make multi-player online games including MMO, MOBA, PvP, and PvE.

Fortran (previously FORTRAN, derived from Formula Translating System) is a general-purpose, imperative programming language that is especially suited to numeric computation and scientific computing.

FreeBASIC is a completely free, open-source, 32-bit BASIC compiler, with syntax similar to MS-QuickBASIC, that adds new features such as pointers, unsigned data types, inline assembly, object orientation, and many others.

Mussel is an interpreted programming language written in Rust. It was designed as a simple and flexible language with a focus on easy-to-read syntax and powerful expression evaluation. Mussel supports basic data types, variable bindings, functions, closures, control flow...

Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments. It provides a sophisticated compiler, distributed parallel execution, numerical accuracy, and an...

Thunkable is a powerful drag-and-drop app builder made by two of the first MIT engineers on MIT App Inventor.

Snap! is a broadly inviting programming language for kids and adults that's also a platform for serious study of computer science.

EduBlocks is a visual block based programming tool that will hopefully help teachers to introduce text based programming languages, like Python, to children at an earlier age.