SeaLion : View raw output for critical events across servers. SeaLion gives you a graphical overview of server activity. View performance of system/custom metri...
Nuster : Nuster is a high performance caching proxy server based on HAProxy. It is 100% compatible with HAProxy, and takes full advantage of the ACL functional...
Blackfire : Blackfire Profiler automatically instruments your code to gather data about consumed server resources like memory, CPU time, and I/O. But Blackfire Pr...
WebPagetest : Run a free website speed test from multiple locations around the globe using real browsers (IE and Chrome) and at real consumer connection speeds.
healthchecks.io : Cron Monitoring. Get Notified When Your Cron Jobs Fail.
Make a HTTP GET request to this address from your cron job, daemon, script or long running tas...
New Relic’s SaaS-based Application Performance Monitoring helps you build, deploy, and maintain great web software.
Also, server monitoring, and more.