Pinfo is user-friendly, console-based viewer for Info documents.
Info document is an old (pre-html) hypertextual docuemntation format that is tradionally used for documentation of GNU utilities. GNU's default reader for info pages (simply called "info") however is not very easy to use due to its arcane key bindings.
Pinfo provides a somewhat more userfriendly interface for reading info pages on the console. It uses regular keybinding (cursor keys do what you expect, and navigating though a document is straightforward).