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.
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.
mydp is a program for processing mysqldump files in the manner of ‘awk’. It reads mysqldump SQL statements from standard input and executes Lua callback functions as table definitions and insert statements are encountered. The Lua callback functions are specified in a file passed to mydp via the command line. The callbacks are typically used to filter and process only a small subset of the MySQL dump data and/or save it for further processing. mydp is written in Lex and Lua.