Listr - Listr lets you explore some of the best lists on Twitter, curated across your favorite categories.
Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.
Refined Twitter - A browser extension that improves the Twitter experience
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.
Vicariously.io - Create Twitter lists based on the follows of other users
Sleep Watch - AI-powered, personalized insights about your sleep.