Simon 5.0b15 released

Here is another beta release of Simon, my website and server monitoring app for macOS. It is now feature-complete; the latest few updates have basically just been for the localizers.

Simon version 5 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, an iMessage notifier, and much more.

Please Note

  • This is a beta release, with significant changes. It should be safe to use now; it isn't likely to change too significantly before the general release.
  • Please help me test it, to ensure a quality general release.
  • If you find any issues with this beta release, please let me know!
  • Simon 5 requires a minimum of macOS 10.12 (Sierra).
  • Simon 5 will be a paid upgrade from Simon 4 after the beta period.
  • Purchasers since September 1, 2020 automatically get a version 5 license (that also works in previous versions); no upgrade needed.


  • Renamed the Change filter as Any Change, to make it more clear what it's for: to detect any change that occurs in the input.
  • Fixed the status icon and Details column in the Activity log not containing the correct values.
  • If a service is not available, e.g. is no longer supported, the service list now displays "unavailable", and the test editor now displays a similar message.
  • Several more changes for localization updates.

Want to try it?

It's getting nearer to general release, with no further features being added now, so I welcome more testing at this time.

If you are using the direct edition, you can change your Updates preferences to include beta releases, then use the Check for Updates feature in the app to update.

Otherwise, download the beta now!