Linktionary is an online dictionary of Internet technologies, networking hardware and protocols, and general Web terminology that "includes extensive links to help you further your network research and training." Users can perform keyword searches of Linktionary or browse the material via alphabetical indexes or topic listings. Most of the entries in Linktionary are explained in detail, and several links to white papers or other external sources on each subject are provided. As an additional resource, the Encyclopedia of Networking is an electronic book that can be freely downloaded from the site -- although it is somewhat dated, the original hardcopy version received substantial recognition within the industry.