pgcli - Postgres CLI with autocompletion and syntax highlighting
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.
Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
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.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Skor - Application and Data, Data Stores, and Database Tools