FitNesse is a software development collaboration tool that can be used to manage BDD scenarios. Strictly speaking FitNesse is a set of tools, described as follows:
As a software testing tool, FitNesse is a lightweight, open source framework that allows teams to collaborate
It is also a Wiki where you can easily create, edit pages, and share information
A web server, so it doesn't require additional configuration or administrative privileges to set up, or configure
Download the FitNesse distribution from http://www.fitnesse.org. The distribution is a JAR file that installs itself on first run. Throughout these examples, we used FitNesse standalone release 20140901 but newer versions should also work.