Also called jewel case, in software distribution it is the term used to describe software that is distributed by the vendor with only the software on the CDand a paper insert in the case. This type of software packaging does not contain a retail box or manual, however if is a full version of the software distributed in this manner, you will receive standard warranty and technical support from the software vendor.
See “All About Software” in the “Did You Know…?” section of Webopedia.