The companies joined the Open Mobile Terminal Platform (OMTP) group, which was formed last June. The group says it is not a standards-setting body but, rather is aimed at promoting open standards and a consistent end-user experience for mobile devices.
Other newly-announced members include Sony Ericsson, Qualcomm, Texas Instruments, Siemens and Ericsson Mobile Platforms. They join existing members such as palmOne, Samsung, Sony, Kyocera and Symbol Technologies.
PalmSource recently said it would be creating a version of its mobile platform for Linux. A PalmSource executive said in a statement that the groups' goal was the same as PalmSource's.
"Our vision is to leverage the openness of the Palm OS platform together with the OMTP group's requirements in order to give users of Palm Powered devices seamless interoperability across smart mobile devices," said Albert Chu, vice president of business development for PalmSource.