or shelf ware

noun Informal.
  1. Computers. software or hardware that remains unsold, unused, or underused: shelfware as part of a bundled license deal.
  2. ideas or findings that are not used or acted upon: The results of your market research can quickly become shelfware.

Origin of shelfware

shelf + -ware; in the sense ‘sitting on a shelf’ Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018