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.

Web Access to the Monitor - like WhistleBlower

WhistleBlower by James Sentman used to have a very similar functionality as Simon.
Unfortunately it was written in Real Basic and had a performance issue when
run with a lot of objects and over a long duration and it's no longer supported.

Simon has other advantages over WhistleBlowers as well, like the
ability to use Shell- and AppleScripts to probe the services.

However, I've liked its built-in Web server of WhistleBlower very much,
which allowed me to access the service monitor from any computer on Internet.


David Sinclair's picture

Re: Web Access to the Monitor - like WhistleBlower

Yes, that was a nice feature. In Simon, you can use the Reports feature to view the recent status of the tests in a web page, but it isn't interactive — you can't control tests from the browser.

This is something I'd like to add in a future version, though it isn't yet scheduled for a release. WhistleBlower did it by running its own web server, which has some advantages, but also disadvantages, like having to make the machine public. With Simon's reports, you can do that or upload to a remove web host.