Datahike - A durable datalog database adaptable for distribution.
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.
Datomic - The fully transactional, cloud-ready, distributed database
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.
MarkLogic Server - MarkLogic Server is a multi-model database that has both NoSQL and trusted enterprise data management capabilities.
Zabbix - Track, record, alert and visualize performance and availability of IT resources