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.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Prometheus - An open-source systems monitoring and alerting toolkit.
Nevercode - Continuous integration & delivery for mobile apps made easy. Build, test & release native & cross-platform apps faster with Nevercode. Sign up for free.
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
Semaphore - Semaphore is a fully managed, high performance testing and deployment solution for your company. A Continuous Integration tool.