Ruby Agent for Instrumental Application Monitoring

Node.js Agent for Instrumental Application Monitoring

Laravel 5 service provider for Understand.io

The .NET Core instrument agent for Apache SkyWalking

The NodeJS server side agent for Apache SkyWalking

The go instrument SDK for Apache SkyWalking

Pandora FMS is a flexible and highly scalable monitoring system ready for big environments. It uses agents (Linux, Windows, AIX, HP-UX, Solaris and BSD systems) and can do both local and remote network monitoring (SNMP v3, TCP checks, WMI, etc).

Pinpoint is an open source APM (Application Performance Management) tool for large-scale distributed systems written in Java.