Flat World Knowledge [1] is offering free and open online access to textbooks in many fields, including more than 40 in business areas such as accounting, communication, business law, economics, finance, management, and marketing. The publisher says the textbooks "are written by leading experts and are peer-reviewed, edited, and highly developed. They are supported by test banks, .ppt notes, instructor manuals, print desk copies, and knowledgeable service representatives."

Print copies in black and white or color are available for purchase, as are electronic versions for iPad, nook, Kindle, and Sony.

An Educator FAQ [2] provides more details.