open source development tool for building fast, easy mobile apps with JavaScript. If you’re a web developer who wants to build mobile applications in HTML and JavaScript while still taking advantage of the core features in the iPhone, Android and Blackberry SDKs, PhoneGap is for you.
Overview site collecting international offers for prepaid mobile data plans
Lots of freeware for the Symbian S60
TXTmob allows groups of users to share information via cell phone text messaging. Sort of a listserv for cell phones.
Signals given off by phones allow shopping centres to monitor how long people stay and which stores they visit