Vaporware is software or hardware that is either (1) announced or mentioned publicly in order to influence customers to defer buying competitors' products or (2) late being delivered for whatever reason. Most computer companies have from time to time delivered vaporware, either by calculation or unintentionally. The vaporware picture is now "clouded" by the existence of beta products, a kind of vaporware that is almost solid. There is a Vaporware Hall of Shame for games software.

Vaporware is also the name of a company that makes games and other products for Amiga users.