SeaLion : View raw output for critical events across servers. SeaLion gives you a graphical overview of server activity. View performance of system/custom metri...
New Relic : New Relic’s SaaS-based Application Performance Monitoring helps you build, deploy, and maintain great web software.
Also, server monitoring, and more.
Kestra : Kestra is an open-source, event-driven orchestration platform that makes both scheduled and event-driven workflows easy. By bringing Infrastructure as...
Glances : Glances is a cross-platform curses-based system monitoring tool written in Python.
Free open source web page change detection. Simply monitor which websites had a text change.