libdrizzle is the client and protocol library for the Drizzle project. The drizzled server will use this as the protocol library, as will the client utilities and any new projects that require low-level protocol communication (like proxies). It is designed to be used for other language interfaces such as PHP extensions and with SWIG.
drizzle-php-ext is a PHP front end for the Drizzle client and protocol library (libdrizzle). It aims to provide a simple interface closely tied to the C library by minimizing interface changes, avoiding duplicate code, and not introducing any new functionality that is not PHP specific.
GNU dico is a flexible dictionary server with a set of accompanying utilities. It supports a wide variety of dictionary database formats, ranging from the traditional "dict.org" databases up to Wikipedia format. Support for arbitrary new formats can be easily added using loadable modules. The dico library provides an API for writing new modules in C, Guile, or Python.
jj is a simple FIFO and filesystem based Jabber/XMPP client. jj is inspired by the ii IRC client. jj is more tool than traditional instant messanger client. It can be easily extended with normal Unix tools. It is perfect for bots and notifications. Interaction with jj is done by writing and reading files from the server directory that jj creates.