Dejal Simon for Mac

Dejal Simon for Mac

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Quick Specs

  • Version:
  • Total Downloads:
  • Date Added:
    Mar. 03, 2015
  • Price:
    Free to try

Editors' Review


Simon (from Dejal Systems) is a reasonably priced, feature-rich site-monitoring tool, especially useful to administrators who need to keep track of multiple sites, servers, and applications. The app's primary interface is a straightforward Monitor window, which displays everything that you're tracking with stats on uptime, time until the next check, and time since the last change and failure--along with graphs, lists, and more details when you drill down. You can drag and drop URLs onto the Monitor window, or import from bookmarks, and Simon's services let you define what you want to test, from SMART status to mounting drives, communicating with mail servers, checking and relaunching apps, and more.

Simon is even more useful outside of its main interface: you can access many functions through the Dock or a Status menu in the menu bar, and you can receive notification a variety of ways, including via Growl, speech, Twitter, or e-mail. Simon can even send a text message to your phone when a site goes down, or just log the event in a database. You can modify all these notification options with plug-ins or scripts (including AppleScript and shell scripts), and Simon also lets you customize its services, allowing you to create new ones or simply edit the defaults.

Advanced users will appreciate all this customizability (along with extras like session capturing and multipage reports), but even less experienced users can quickly get up to speed with this flexible, reliable utility.

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Publisher's Description

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User Reviews

5 stars

"Excellent replacement for Whistleblower"

June 23, 2008  |  By afterhours

 |  Version: Dejal Simon 2.4.1


This review was originally posted on
I waited years for James Sentman to get around to updating Whistleblower for the newer APC equipment. Sadly, that hasn't happened (yet).

But on the bright side, it forced me to find a modern solution, and with Simon, I've got all the control over my alerts and AP7900 that I need. Server monitoring is back, and with Simon, I feel unleashed from the server room again. The developer has been open and responsive to questions about the product and feature enhancements. Once I outgrow my $60 license, it'll be a no-brainer to move up to Enterprise.

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5 stars

"Excellent piece of Software"

November 22, 2006  |  By David Chandler

 |  Version: Dejal Simon 2.2c1


This review was originally posted on
I have been using Simon for over a year now and all I can say is what a great product, it does what it is supposed to and the support from the developer is first class, if you have any configuration problems David goes out of his way to help (even at weekends), this product gets better and better with each release, there is nothing else like it. If you want to monitor your servers and keep an eye on what is happening this product is a must have.

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Full Specifications

What's new in version 4.0.3
  • When the Show the Simon icon in the Dock preference is turned on, its status is now immediately updated.
  • If a password has been set to access Simon, the unlock panel is now shown without the Monitor window.
  • Fixed a hang in the Twitter notifier when typing in the message text area.
  • Fixed some cosmetic Console warnings with the notifier options editor.
  • Fixed an issue that prevented the MySQL helper from starting.
  • Fixed the helper to launch Simon on login.
Publisher Dejal
Publisher web site
Release Date March 03, 2015
Date Added March 03, 2015
Version 4.0.3
Category Networking Software
Subcategory Network Management Software
Operating Systems
Operating Systems Macintosh, Mac OS X 10.10
Additional Requirements None
Download Information
File Size 12.25MB
File Name
Total Downloads 1,264
Downloads Last Week 3
License Model Free to try
Limitations Not available
Price Free

Previous Versions:

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