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.
MakeMyTrip - MakeMyTrip is a leading Online Travel Application that provides multiple services such as flights tickets, domestic and international holiday packages, reservations, bus and train tickets etc.
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.
WorldMate - WorldMate is a travel app that helps individuals plan and organize trips. The app is available for Android and iOS mobile devices, and it is free to download and use.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Airbnb - Book unique places to stay and things to do.