23 releases (15 breaking)

Uses new Rust 2024

0.16.1 Jan 5, 2026
0.16.0 Jul 23, 2025
0.15.3 Apr 7, 2025
0.15.2 Jan 22, 2025
0.5.0 Dec 17, 2020

#1644 in Programming languages

Download history 31/week @ 2025-10-09 86/week @ 2025-10-16 63/week @ 2025-10-23 36/week @ 2025-10-30 34/week @ 2025-11-06 49/week @ 2025-11-13 46/week @ 2025-11-20 51/week @ 2025-11-27 34/week @ 2025-12-04 36/week @ 2025-12-11 63/week @ 2025-12-18 42/week @ 2025-12-25 54/week @ 2026-01-01 38/week @ 2026-01-08 79/week @ 2026-01-15 72/week @ 2026-01-22

243 downloads per month
Used in 15 crates (12 directly)

MIT license

1MB
25K SLoC

Koto


Docs Crates.io CI Discord


Koto is a simple and expressive programming language, usable as an extension language for Rust applications, or as a standalone scripting language.

Info

Development

The top-level justfile contains some useful commands for working with the repo, for example just checks which runs all available checks and tests.

After installing just, you can run just setup to install additional dependencies for working with the justfile commands.

MSRV

Koto is under active development, and tested against the latest stable release of Rust.

Dependencies

~3–5.5MB
~95K SLoC