A simple, Git-powered wiki with a sweet API and local frontend.

A quick & dirty git-powered Sinatra wiki

Olelo is a git-based wiki which supports many markup languages, tags, embedded TeX and much more. It can be extended through plugins.

Irwi is Ruby on Rails plugin which adds wiki functionality to your application.

A personal and collaborative wiki for Vim users

The easy to use rails wiki

include Gollum into Rails with ease

An elegant wiki system for anyone who respects their grandmother

A small blog + wiki engine built on Sinatra + Stone

a sinatra/couchdb wiki

Gitki is a wiki using git to store data.

a simple wiki powered by sinatra

Wiki for Ramaze running on Innate

Wiki engine based on Rails 3 engine

A Rails powered wiki with a sensible code base. Work in progress.

Instiki is a Wiki Clone written in Ruby that ships with an embedded webserver. You can setup up an Instiki in just a few steps. Possibly the simplest wiki setup ever.