The Ware Tetralogy is a series of four science fiction novels by author Rudy Rucker: Software (1982), Wetware (1988), Freeware (1997) and Realware (2000). The first two books both received the Philip K. Dick Award for best novel. The closest to the cyberpunk genre of all his works, the tetralogy explores themes such as rapid technological change, generational differences, consciousness, mortality and recreational drug use. In 2010, Prime Books published The Ware Tetralogy: Four Novels by Rudy Rucker, which collects the entire series in a single paperback volume and includes an introduction by noted cyberpunk author William Gibson. The online version of The Ware Tetralogy was simultaneously released for free distribution under a Creative Commons Attribution-NonCommercial-No-Derivative License. Source: Wikipedia (en)