Syringe is a sister project to Antidote, which provides an in-browser infrastructure automation learning platform. Syringe's role is to provide all of the back-end orchestration to make this possible. It provides a layer of middleware between the antidote-web front-end, and the Kubernetes cluster where all of Antidote's lesson entities are running.
The Syringe documentation is your one-stop shop for more details, so go check it out!