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

A quick & dirty git-powered Sinatra wiki

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

The easy to use rails wiki

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

A personal and collaborative wiki for Vim users

An elegant wiki system for anyone who respects their grandmother

include Gollum into Rails with ease

A small blog + wiki engine built on Sinatra + Stone

a sinatra/couchdb wiki

a simple wiki powered by sinatra

Wiki for Ramaze running on Innate

Gitki is a wiki using git to store data.

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

Wiki engine based on Rails 3 engine

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.