fun-lang.xyz)

What is Fun?

Fun is a highly strict programming language, but also highly simple. It looks like Python (My favorite language), but there are differences.

Influenced by Bash, C, Go, Lua, Python, and Rust (Most influences came from linked languages).

Fun is and will ever be 100% free under the terms of the Apache-2.0 License.

☑ = Done / ☐ = Planned or in progress.

Dynamic and optionally statically typed
Type safety
Written in C (C99) and Fun
Internal libs are written with no_camel_case even when written in Fun, except class names
Only a minimal function set is written in C, and most other core functions and libraries are implemented in Fun

Fun is a programming language built on a simple idea: Coding should be enjoyable, elegant, and consistent.

Fun is Fun
Programming should spark creativity, not frustration. Code in Fun feels light, playful, and rewarding.
Fun Uses Nothing
Minimalism is power. No unnecessary features, no endless syntax variations, no formatting debates. Just clean, uniform code.
Indentation is Truth
Two spaces, always. No tabs, no four-space wars. Code should look the same everywhere, from your laptop to /usr/bin/fun.
One Way to Do It
No clutter, no 15 ways of writing the same thing. Simplicity means clarity.
Hackable by Nature
Fun should be small and embeddable, like Lua. Easy to understand, extend, and tinker with — true to the hacker spirit.
Beautiful Defaults
A language that doesn’t need linters, formatters, or style guides. Beauty is built in.

Fun is not about being the fastest or the most feature-rich. It’s about sharing joy in coding. The community should be:

Like the name says: Fun Unites Nerds.

Please visit the Fun Community Page to get in touch.

A language that feels like home for developers who:

Fun may not change the world — but it will make programming a little more fun.

I am writing documentation only actually, but this is work in progress, since debugging and bug fixing includes this task.

Current documentation is only found in the Fun Handbook.

In the examples/ directory should be an example of most Fun features.

Complete API documentation will follow.

Johannes Findeisen you@hanez.org