Lua-Sqlite3 is a binding of SQLite 3 for Lua. It is unique in contrast to other database bindings that it consists of two layers. The first layer translates the SQLite 3 implementation's C API to Lua. The second layers are interface layers, written in Lua. These layers provide a nice and smart view of the database.
TacitPixel (formerly libTAP ) is a prototyping system for virtual reality and augmented reality applications. It runs on a variety of platforms. RAP (rapid application prototyping) is done through the Lua interface, which mirrors the C++ namespace as closely as possible. libTAP has a small but distinctive feature set, focused on prototyping of realtime 3D simulations.