Dejal announces Simon 4.1 - Server Monitoring Tool Posted 8/12/2015 at 15:52 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Portland based Dejal Systems, LLC today announced Simon 4.1, 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. HTML reports allow remote viewing of a summary and/or details of Simon monitoring. Version 4.1 includes a redesigned web feature, the ability to send custom headers and load dynamic content, and so much more.