Spinnaker is a type of sail used on sailing vessels, designed to catch wind from behind the boat. It is typically larger and more balloon-like than other sails, allowing for increased speed and efficiency when sailing downwind. Spinnakers come in various shapes and sizes, including symmetrical and asymmetrical designs, each suited for different sailing conditions. In addition to its use in sailing, Spinnaker is also the name of an open-source continuous delivery platform. This software helps developers automate the deployment of applications across multiple cloud providers and environments, streamlining the process of delivering software updates and improving overall efficiency in software development.