Building a Scalable Collaborative Web Filter with Free and Open Source Software

In this case study, we describe the design and architecture of a scalable collaborative web filtering service, TaggyBear, which is powered by free and open source software. We will introduce the reader to the ideas and concepts behind TaggyBear, and discuss why we picked the software components that form the basis of the service. We will talk about how we combined or extended their functionality to build the TaggyBear service, and provide some initial benchmarking results and performance figures.