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.
Use GnuPG in your own programms Privacy Guard Glue (http://www.nessie.de/mroth/pgg/) is a library written in C to add GnuPG support to applications. It uses the coprocessing interface of GnuPG.