Please use https://github.com/jarthod/bttrack fork
Simple BitTorrent tracker using Sinatra that doesn't require database backend
Running on localhost:
$ git clone git://github.com/shurikk/bttrack.git
$ cd bttrack
$ bundle install
$ bundle exec rackup
You can also use a demo instance: create a .torrent file and use http://bttrack.herokuapp.com/announce as announce URL.
Configuration options are available at the top of bttrack.rb