markov.sql implements third order (and lower) model Markov Chains, including training and generation, in pure SQL(ite). The source code archive also contains a pre-trained SQL dump with models based on the 1990 US Census Bureau data sets for first and last names, and an excerpt of the 2012 US tax office corporation names.
sxmppd is a server for the XMPP (Jabber) chat protocol. While other, functional XMPP servers exist, they are not as simple or have many dependencies. It supports user authentication, SSL, roster management, presence updates and subscriptions, messaging (local users), group chat, and file-based server configuration.