https://github.com/mech-lang/mech

🦾 Mech is a programming language for building data-driven systems like robots, games, and interfaces. Start here!
https://github.com/mech-lang/mech

compiler data-processing embedded game-programming iot live-programming programming-environment programming-language reactive-programming robotics

Last synced: 2 days ago
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🦾 Mech is a programming language for building data-driven systems like robots, games, and interfaces. Start here!

• Host: GitHub
• URL: https://github.com/mech-lang/mech
• Owner: mech-lang
• License: apache-2.0
• Created: 2018-08-13T16:54:37.000Z (over 7 years ago)
• Default Branch: main
• Last Pushed: 2026-03-08T14:05:10.000Z (12 days ago)
• Last Synced: 2026-03-08T17:52:27.335Z (11 days ago)
• Topics: compiler, data-processing, embedded, game-programming, iot, live-programming, programming-environment, programming-language, reactive-programming, robotics
• Language: Rust
• Homepage: http://mech-lang.org
• Size: 20.2 MB
• Stars: 262
• Watchers: 5
• Forks: 16
• Open Issues: 157
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• programming-languages - Mech - Language for developing data-driven, reactive systems like animations, games, and robots. ([Web](http://mech-lang.org/)) (Other)

README

          


    





  



**Mech is for building** data-driven, reactive systems like **robots**, games, embedded devices and more.

**It simplifies data** distribution, transformation, and analysis **so you can focus** on your project.

- [Try Mech](https://try.mech-lang.org) online in your browser. 

- [Read the docs](https://docs.mech-lang.org) to learn the language.

- [Follow our blog](https://mech-lang.org/blog/) to stay updated on new developments.

***

The following code implements FizzBuzz in Mech:



  



See the docs for an [extended version](https://docs.mech-lang.org/examples/fizzbuzz.html) that runs live in your browser.

Some notable features of Mech are demonstrated in this short program:

- **Concise Syntax**: Expressive and flexible, with no need for keywords or semicolons; Mech programs are generally shorter than in other languages.

- **Broadcast Operations**: Vector operations apply elementwise automatically, removing explicit loops and enabling efficient vectorization.

- **Logical Indexing**: Vector elements are conditionally selected using broadcast logic operations, enabling declarative iteration and parallel execution.

- **Type Inference**: Variable and expression types are inferred, so explicit type declarations are often unnecessary.

- **Immutable**: Variables are immutable unless specified, promoting safer code and easier reasoning.

- **Rich Text**: Mech programs support rich formatting and literate programming through Mechdown, a Markdown dialect.

## Run Mech

There are several ways to get Mech running on your machine, which you can find in the [docs](https://docs.mech-lang.org/getting-started/installation.html). The easiest way to get started is to use the online REPL at [try.mech-lang.org](https://try.mech-lang.org).

## Documentation

New to Mech? Start with [Learn Mech in Fifteen Minutes](https://docs.mech-lang.org/guides/mech-in-fifteen-minutes.html).

Comprehensive documentation is available at [docs.mech-lang.org](https://docs.mech-lang.org) and open-sourced on [GitHub](https://github.com/mech-lang/mech/tree/main/docs).

## Community

The Mech community gathers at a few places around the Internet:

- [Discord](https://discord.gg/asqP25NNTH) - for live chat

- [GitHub](https://github.com/mech-lang) - for code and issues

- [YouTube](https://www.youtube.com/@MechLang) - for video tutorials

- [Reddit](https://www.reddit.com/r/mechlang/) - for help and general discussion

- [Mailing List](https://groups.google.com/g/mechtalk) - for dev discussion

Feel free to stop by and introduce yourself -- we're happy to meet new users and answer questions! 

## Project Roadmap

Mech v0.3 is currently **beta** status, meaning while many intended features are implemented and working well, other features are incomplete, not tested, or undocumented.

A Brief Roadmap:

- ☑️ [v0.1](https://github.com/mech-lang/mech/tree/v0.1-beta) - proof of concept system - minimum viable language implementation

- ☑️ [v0.2](https://github.com/mech-lang/mech/tree/v0.2-beta) - data specification - formulas, defining and manipulating data

- 📍 [v0.3](https://github.com/mech-lang/mech/tree/v0.3-beta) - program specification - functions, modules, state machines, Mika

- ☐ v0.4 - system specification - tools, distributed programs, capabilities

For more details, read the [ROADMAP](https://docs.mech-lang.org/design/ROADMAP.html).

## Notice

Mech should be considered unstable and therefore unfit for use in critical systems until v1.0 is released.

## License

Licensed under [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0).