What is Lua?

Taken from the Lua: about page, lua is:

[...] a powerful, fast, lightweight, embeddable scripting language.

Lua combines simple procedural syntax with powerful data description constructs based on associative arrays and extensible semantics. Lua is dynamically typed, runs by interpreting bytecode for a register-based virtual machine, and has automatic memory management with incremental garbage collection, making it ideal for configuration, scripting, and rapid prototyping.

This Fossil repository aims to create a stable front from where the entire source history of stable Lua releases can be made available and downloaded from.
In addition to that, it also looks a lot like the Lua home page. Pretty cool eh?

It's worth noting though that I did not make Lua, and this is merely an unofficial source code host, not affiliated in any way with the creator(s) of Lua.