Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
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.
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
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.
Google Cloud Functions - A serverless platform for building event-based microservices.
Zabbix - Track, record, alert and visualize performance and availability of IT resources