Thin Boxes - "Thin Boxes" is slang for a set-top box that has a limited number of options and functions. The opposite of Thin Boxes are Thick Boxes. Thick boxes can offer more advanced and interactive functions. Most  set-top boxes (at the time of this writing) are "thin" boxes, not the "thick boxes" which are available now and will take over the market in time.

Thin-client

ASTB (Advanced Set Top Box)

Box-to-box Networking

Digital Satellite System, Satellite Box

Hybrid Digital Cable Box

Interactive TV Software

IP-based Set-top Box

Low-end Boxes

Set-top Box-based Banking

Set-top Box-based System

Set-top Box Software

Set-top Box Subscriber

Smart TV Set-top Box

Software Stack

Venus Set-top Box Project

Video Juke Box – (Digital Video Music)