Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.
KosmoTime - The to do list with super powers
SleepBot - SleepBot is a sleep tracking app available in Google Play and the Apple App Store.
Todo Tab - A privacy-first todo list
Online Alarm Clock - The world's original online alarm clock, established in 2006.
Gone - An ephemeral to-do list