OpenMoko is a GNU / Linux based open software development platform. Developers have full access to OpenMoko source and they can tailor their implementations to underlying hardware platforms.
Bemused is a system which allows you to control your music collection from your phone, using Bluetooth. It requires a Series 60 or UIQ phone (e.g. Nokia 7650/3650, or Sony Ericsson P800/P900), and a PC with a Bluetooth adapte
The design will supposedly cost less, boot up faster (in five seconds, using Linux as the operating system), work with any SIP-based VoIP provider, and provide up to five hours of talk time.