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Moss

Editors & IDEs

Moss is an experimental programming language designed for long‑lived software projects where humans and AI agents collaborate on the same codebase.

Python Latest v0.99.0 · 1mo ago Security brief →

Features

  • Experimental language prototype supporting effects, records, unions, rules, functions, tests, loops, maps, JSON I/O, file system access, networking calls, deterministic dependency management, and editor tooling (language server, syntax highlighting).
  • Provides a command‑line `moss` executable with checking, running, testing, formatting, golden output verification, documentation generation, REPL, and Studio UI.
  • Includes self‑hosting sketches demonstrating tokenizer, parser, checker, AST nodes, and project checks written in Moss itself.

Recent releases

View all 8 releases →
No immediate action
v0.99.0 New feature

Embedded selfhost modules

No immediate action
v0.95.0 New feature

Standalone exec + selfhost compiler

No immediate action
v0.90.0 New feature

CVM bridge + compiler_core.moss update

No immediate action
v0.88.0 Mixed

Function compilation, VM upgrades, selfhost commands

No immediate action
v0.73.0 New feature

No‑Python GA release

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About

Stars
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Forks
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Languages
Python JavaScript CSS

Install & Platforms

Install via
pip
Platforms
windows linux macos

Beta — feedback welcome: [email protected]