High Quality Content by WIKIPEDIA articles! The Tungsten series was Palm, Inc.`s line of business-class Palm OS-based PDAs. With the purchase of the Palm name from PalmSource, Palm has dropped the Tungsten name from its newer offerings. As of 2007, only the Tungsten E2 continues to use the Tungsten name. Palm`s other business-class model continuing the Tungsten line, but without the Tungsten name, is the Palm TX.