Objective-C

RebelMouse
RebelMouse is an aggregator for social media that was launched by Huffington Post.

Skyhook
Skyhook Wireless can determine your location based on the nearest WiFi router that it picks up through your computer and is the core basis of MyLoki.

Knozen
Knozen is a fun, interactive social network application designed for colleagues, friends and other people who are either related or wish to find out more about each other.

OpenCancer Network
Open Cancer Network is a mobile social network application that is available for different users such as patients, doctors, caregivers, friends and family, researchers.