Zabbix - Track, record, alert and visualize performance and availability of IT resources
The Security Checklist - The Practical Security Checklist for Web Developers
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.
SafeBase - SafeBase is the interactive security portal to share your security posture, automate access to sensitive compliance information, and subscribe to vendor security program updates.
Prometheus - An open-source systems monitoring and alerting toolkit.
WordPress Security Scanner - Check if your WordPress site has known vulnerabilities