Code that stays clean, readable, and reliable.
Whether you are learning to program or building mission-critical software, Clean Language helps you write code that is simple, predictable, and easy to maintain.
Built for Modern Development
Clean Language combines the safety of Rust with the readability of Python, compiling to high-performance WebAssembly.
Clean & Simple
Readable, indentation-based syntax designed to reduce noise and keep focus on logic.
Beginner-Friendly
Perfect for students, educators, and anyone learning programming for the first time.
Clean and Powerful
Write less code that does more. Clean Language's expressive syntax lets you focus on what matters.
start:
print greet("World")
print greet("Clean")
functions:
string greet(string name)
return "Hello, {name}!"$ cln compile -o hello.wasm hello.cln
$ cln run hello.wasm
Hello, World!
Hello, Clean!Code With AI, Not Around It
The first language designed for humans and AI to write together. Built-in compiler access, intent keywords, and zero-config plugins.
AI Understands Your Code
Built-in intent and spec keywords give AI context about what your code does and why it exists.
Real-Time Compiler Access
MCP server lets AI tools compile, check, and validate code as they write it. Errors caught before you even see them.
Zero Configuration
Plugin auto-detection means AI-generated code just works. Put a file in the right folder and the compiler knows what to do.
Start Building in Minutes
Get up and running with Clean Language in three simple steps.
Install Clean
One command with the Clean Version Manager.
Write Your First File
Create hello.cln with a simple start: block.
Run It
See your first output in seconds.
Join the Community
Connect with developers building the future of type-safe, WebAssembly-first programming.