Blissfully - Blissfully offers solutions to track, manage, and optimize SaaS spendings.
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.
Zylo - Zylo helps organizations optimize their SaaS investments by providing insights around Spend, Utilization, and User Feedback.
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.
Torii - SaaS Management Software.
Zabbix - Track, record, alert and visualize performance and availability of IT resources