Simon icon Simon
Flexible server monitoring

Introducing Simon 5!

Simon version 5 is now available. It is a massive update, introducing a much-requested feature: syncing the Simon data between multiple Macs, plus a Simon Status service, a Link Checker filter, improved Find filter, iMessage and Speak Error notifiers, a new app icon, and much more.

Important: please note that Simon 5 requires a minimum of macOS 10.12 (Sierra), and is a paid upgrade from Simon 4. Purchasers since September 1, 2020 automatically get a version 5 license (that also works in previous versions).

Read the Simon What's New page for details.


The latest version seems to be maximizing 100% of the CPU after several hours! Has anybody else seen this. Do I have to redefine my alerts?

David Sinclair's picture

Re: 100%CPU

I haven't had any other reports of that, or experienced it myself. You could use Activity Monitor (in /Applications Utilities) to get a Sample of it when it is using lots of CPU, to see what it's doing. Email me the log.