ScanTool.net, LLC is the maker an inexpensive OBD-II scan tool.
Their products are robust, simple to use, and have been called "the
least expensive turn-key OBD-II solution"
ScanTool.net is located in Phoenix, Arizona, in the heart of the
Silicon Desert. The company was founded in April of 2002, with one
goal in mind: to make an affordable, yet sophisticated, personal scan
tool.
The compact and durable ElmScan 5 scan tool supports
all OBD-II protocols, features automatic protocol detection, and ships
with a number of compatible diagnostic programs.