The Sun Ray is a stateless thin client computer (and associated software) aimed at corporate environments, that was originally introduced by Sun Microsystems in September 1999 and discontinued by Oracle Corporation in 2014. It features a smart card reader and several models featured an integrated flat panel display.
The idea of a stateless desktop was a significant shift from, and the eventual successor to, Sun's earlier line of diskless Java-only desktops, the JavaStation.