The Jet Programming Language

Jet is a general purpose programming language that aims to strike a balance between ergonomics and performance. It was released in Oct 2026 and is currently in alpha.

Quick Facts:

• It supports both OOP and functional programming paradigms
• The syntax is similar to Typescript and Swift
• Arrays and strings are dynamic
• Memory is automatically managed for you
• You have full control over how values get passed around (by value or by reference)
• Programs compile to native executable binaries
• LLVM is used as the compiler's backend
• The compiler front-end and IR layer are written by hand.
• AI was strictly used for learning purposes and to help make sense of obscure LLVM errors.

Here is a simple hello world program:

// main.jet
print("hello world");
bash
$ jet ./main.jet # outputs ./main

$ ./main
hello world

Please visit jet-lang.com to learn more.

At this time, the recommended way to download Jet's compilers is through the Release Page.

Please visit jet-lang.com/docs

Please visit BUILD_FROM_SOURCE.md

Please visit CONTRIBUTING.md

Please visit ROADMAP.md

Please visit FAQ.md

Jet is licensed under Apache License, Version 2.0.

To view the license, click here