RTBkit is an open-source software package that allows you to create and deploy a Real Time Bidder for display advertising.
Getting Started (Installation and build instructions)
RTBKit is provided by Beeswax, the creator of the Bidder-as-a-Service. Beeswax provides a single-tenant cloud-based RTB Bidder that includes access to supply, reporting, a user interface and REST API, and everything else you need to deploy a custom RTB stack.