RoR Web

Junebug is a simple, clean, minimalist wiki intended for personal use. Built on Camping web microframework. Sqlite3 database backend. Features:

Simple installation (via gems)
Standalone operation. No need to run a webserver.
SQL database backend for reliability.

Junebug Wiki creates a folder with your complete wiki contents in it―the database, the images, even the script to start and stop it. A lib directory as well, for plugins and, possibly, working versions of all the dependencies.