A couple of our recent customers have had their applications configured for HTTPS only. Currently we are using a tool which does a good job of monitoring customers' app-server state. For the existing customers, HTTP URLs also work, so the tool can monitor the health. But the recent one have only the HTTPS enabled so the tool fails automatically.
To this end, I am looking for a tool which would monitor the app-server state and send email to the group.
Simple monitoring like checking to see if the app-server is up or not is all I would need. But more features are also definitely helpful.