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Flexible server monitoring

Simon 5 is coming soon!

Simon version 5 is currently in beta testing. 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 will be a paid upgrade from Simon 4 after the beta. Purchasers since September 1, 2020 automatically get a version 5 license (that also works in previous versions).

Read the blog for details.

About the Release Notes

Want to know what has changed since a previous version? This page lists those changes. You can alter the range of release notes to display if you wish.

The latest general release of Simon is version 4.3.1. The latest beta release is version 5.0b13.

Display from version to version as Including betas

Simon 4.3.1
(Release 4034): released 2018-10-08; requires macOS 10.10 or later; Mojave compatible
Simon 4.3
(Release 4033): released 2018-09-19; requires macOS 10.10 or later; Mojave compatible

Mojave dark mode and compatibility

Added the ability to follow or not follow a meta refresh for each test

Several improvements to the pause and auto-pause functions

A number of refinements of services and filters

Updated the default data

Plus many other improvements