Simon 4.3.1Simon 4.3.1
Monitor websites and servers for changes or failures

Simon 4.3.1

Dejal Simon is the essential site monitoring tool for Mac OS X. It checks servers for changes or failures, and notifies you via e-mail, sound, speech, Twitter, or other means. You can use it to track updated sites, and to alert you when an important server goes down or recovers. Developed in Cocoa, it is a native Mac OS X application with an intuitive and attractive interface.

Simon is very versatile. It can be used to monitor your own website and servers, track posts and new comments on your or friends' blogs, check for web mail, get notifications of updates to favorite news and entertainment websites, keep an eye on auctions, and many other uses.

Simon Monitor Window

Try It Now!

Download and try Simon for free! Version 4.3.1 is currently the latest release. Read the Simon release notes to see what has changed in this version, or read the User Guide to find out more about it.

New in 4.3.1:
  • Fixed a crash when generating a remote report.
  • Further tweaks for dark mode on Mojave.
New in 4.3:
  • Mojave dark mode and compatibility
  • All of the app content has been updated to support ...
[More ...]
New in 4.2.2:
  • Updated support for Setapp. (Prefer a subscription to Simon and ...
  • Added an in-app purchase option, so you can purchase a ...
[More ...]
System Require­ments:
OS X 10.10 (Yosemite) or higher