A rather direct provisioning and deployment system in ruby, bash over ssh, and rsync. SyncWrap is a refreshingly straightforward, DSL-free non-framework with no central server or repository requirements. The "magic", if any, lies in the elegant component model, the shell command queue, and a few powerful methods like rput (augmented rsync).
Gemfile gem 'syncwrap', '~> 2.3.0'
install gem install syncwrap