Uber

Uber Technologies is expanding its on-demand car service to the BlackBerry and Windows Phone mobile operating systems, concurrently updating its application for Google's Android.

With an audience of more than 3,000 people from 45 countries, last week's Web Summit in Dublin brought together dozens of experts in mobility, cloud and digital marketing, but developers were a key area of interest as the conference played host to hundreds of startups vying for investor interest. FierceDeveloper was on the ground during the Web Summit and we compiled the following list of ideas, advice and food for thought for mobile app makers to consider.

Wireless startup Karma is offering a hotspot that accesses Clearwire's mobile WiMAX network and allows users to open it up to the public, earning hotspot owners free data service for every new user who signs in.