The QtLua library aims to make Qt 4 applications scriptable using the Lua scripting language. It is an alternative to the QtScript module. QtLua does not generate or use generated binding code for Qt. Instead it provides useful C++ wrapper classes to make C++ and Lua objects accessible from both Lua and C++. It takes advantage of the Qt meta object system to expose QObject members to Lua scripts and comes with user manual and examples.
LuaRocks is a deployment and management system for modules in the Lua programming language. It aims to provide facilities for Lua such as those from module systems of other scripting languages, such as Ruby's RubyGems or Perl's CPAN. LuaRocks allows Lua modules to be installed as self-contained packages called "rocks", which also contain version and dependency information.
C/Invoke is a library which can call C functions at runtime with no prior knowledge of the function prototypes. This capability is used to allow any language to call native libraries without writing a separate module in C, similar to the P/Invoke functionality of the .NET framework.
Diluculum is a library that intends to make the coexistence of C++ and Lua more harmonious. In this regard, it offers essentially three "services": a nice way to access data stored in a Lua interpreter; a not so bad way to write functions in C++ and make them available to Lua; and a limited and just barely usable way to register C++ classes and objects in a Lua state.