Assembly Line

Luau

A small, fast, and embeddable programming language based on Lua with a gradual type system.

Luau is an open-source programming language project on GitHub under the MIT license (permissive), with 6.1k stars. It is built with LLVM project and Lua. Its last push was today.

Stars
6.1k
License
MIT
Activity
Active
Latest release
0.745

Code on GitHub Website

Judgement

What it is
Building block
What it does
Luau, Roblox's fast embeddable scripting language derived from Lua 5.1, with gradual typing, sandboxing and a type checker.
Adopt it when
You need a safe, fast scripting language to embed in a game or application, or you develop on Roblox.
Watch out
Diverges from upstream Lua, so some Lua libraries need changes.
Ready for
Production-ready
Runs as
Library and command line
Built with
C++
How established
Established: started 8 years ago, latest release 0.745.
What the license allows
You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

LLVM projectLua

Follow it down: Luau → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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Stars, license and activity come from GitHub and refresh on a rolling hourly schedule. The project's own description is quoted as written.