Dejal announces Simon 4.0 - Server Monitoring Tool Posted 12/19/2014 at 3:54 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Dejal Systems, LLC today announces Simon 4.0, an update to the essential server monitoring tool for Mac OS X. Simon checks web pages, FTP and DNS servers, local or remote ports or volumes, and many other kinds of services for changes or failures. Version 4.0 includes a fresh new design, unifying all of the lists, logs and editors into a single window. It also introduces groups, unlimited tests. email services, a context filter, filter output in the preview, password protection and much more.