Dejal announces Simon 4.2 - Server Monitoring Tool Posted 2/23/2016 at 17:25 UTC in Mac by gnye@amdesign.net | Permalink | Tweet Portland based Dejal Systems, LLC today announces Simon 4.2, 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 enable remote viewing of a summary and/or details of Simon monitoring. Version 4.2 includes new exclusion and difference analysis filters, email, preview and reports improvements, and much more.