Handspring, Inc., was an American electronics company founded in 1998 by the founders of Palm, Inc., after they became dissatisfied with the company's direction under the new owner 3Com. The company developed Palm OS–based Visor- and Treo-branded personal digital assistants. In 2003, the company merged with Palm, Inc.'s hardware division.

Palm, Inc., was an American company that specialized in manufacturing personal digital assistants (PDAs) and developing software. Palm designed the PalmPilot, the first PDA successfully marketed worldwide, and was known for the Treo 600, one of the earlier successful smartphones. Palm developed the Palm OS software for PDAs and smartphones released under its line of Palm-branded devices and also licensed to other PDA manufacturers.