Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.

Audible - Audible is the world’s largest provider of premium audiobooks and spoken word content.

Sleep as Android - Common alarm clocks ignore your sleep cycles, they wake you on schedule no matter your are currently in your deep sleep. Waking up from deep sleep is unpleasant, it makes you tired and it may negatively affect your productivity during the whole day.

Downpour.com - Listen to high quality audiobooks instantly. Download audiobooks to your iPhone, Android, or other listening device. Find titles including best-sellers and new releases. Downpour, where content reigns.

Alarm Klock - A better alarm clock.

LearnOutLoud.com - LearnOutLoud.com is the web's largest resource for audio & video learning.