Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
SleepBot - SleepBot is a sleep tracking app available in Google Play and the Apple App Store.
AppDynamics - Get real-time insight from your apps using Application Performance Management—how they’re being used, how they’re performing, where they need help.
Talalarmo - Minimalistic android alarm
Zabbix - Track, record, alert and visualize performance and availability of IT resources