Nifty - Manage projects, work, and communications in one place.
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.
Intercom on Product Management - The ultimate resource for aspiring product managers
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.
Party Line - Use Slack to manage your projects
Zabbix - Track, record, alert and visualize performance and availability of IT resources