RedReader - RedReader - An unofficial open source Reddit client for Android.
narwhal - Narwhal is a simple iOS app for reddit.
reddit is fun - reddit-is-fun is an unofficial Android app for reddit.com.
Snapzu - Snapzu is basically reddit alternative.
Readder for Reddit - Readder for Reddit is an elegant and powerful client for the iPhone, iPad and Apple TV.
Apollo - Apollo is a full project management and contact tracking application.