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.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
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.
Splash - Anyone can create a Splash event, whether you're a company hosting a single event or an individual hosting a personal event like a birthday or wedding. Get Started for Free. Text goes here. X. Full Event Program.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.