Simon icon Simon
Flexible server monitoring

Simon is a powerful and flexible tool. This list provides a brief summary of some of its features. Version 4 includes many more enhancements.

Simon 3 Simon 4
Single window design
Fast and easy to access everything.
Organize items into groups
Arrange by server, type etc.
Filters to detect changes
Tests can use multiple filters to examine the interesting parts of the service output.
Notifiers to alert you
Tests can use multiple notifiers to inform you of changes, failures & recoveries.
Reorder filters & notifiers
Easily rearrange the order.
Web (HTTP) service
Check a website for changes or failures.
DNS service
Query a domain name server.
Email service
Check that you can send, receive, or both.
RSS service
Read RSS feeds.
FTP service
Look at a file on an FTP server.
Ping service
Ping any server to check responsiveness.
Application service
Ensure an application is present, and/or running.
Drive Status service
Checks the drive capacity threshold, S.M.A.R.T. status, and more.
FTP Directory Listing service
Watch a directory listing on an FTP server.
IMAP, POP & SMTP Mail services
Make sure mail servers are available.
Mount service
Mount a local, AFP, or SMB volume.
MySQL service
Connect to a local or remote MySQL database.
SNMP Status service
Checks the status of a SNMP-connected device.
System Error Log service
Look for text in today's system log.
SSH service
Converse with a remote secure shell session.
TCP Port Scanner service
Checks the status of all TCP ports.
Plus other services
Including NTP, SMB, Screenshot, and more.
Customize services
Add your own (e.g. via scripts), or edit existing.
Block filters
Filter service output; detect changes.
Context filters
Output some context around the filter's output text.
Find filters
Find using simple or regular expression matching.
Format filters
Reformat the output text.
Input filters
Echoes the input.
Number filters
Detect if a number changed by a specified amount.
Override filters
Change the result status.
Customize filters
Add your own (e.g. via scripts), or edit existing.
Action notifiers
Bounce the Dock icon, activate Simon, display in your web browser, and other actions.
APC Masterswitch notifier
Toggle an outlet on an APC Masterswitch device.
Calendar notifier
Add events or tasks to Apple Calendar.
Email notifier
Send an email message.
Growl notifier
Display a Growl notification.
Launch notifier
Start or switch to an application.
Mount notifier
Mount or dismount a local, AFP or SMB volume.
MySQL notifier
Add an entry to a database to log an event.
SMS notifier
Send a SMS text message.
Sound notifier
Play a sound.
Speech notifier
Simon talks to you.
Twitter notifier
Send updates or direct messages via Twitter.
Web notifier
Get or post to a web page.
Customize notifiers
Add your own (e.g. via scripts), or edit existing.
Save HTML reports
Save reports to disk using customizable templates.
Upload HTML reports
Upload reports to remote web servers.
Preview page source
Preview websites or see the page source.
Preview filter output
Also see the output of each filter.
Setup Assistant
Quickly add Web (HTTP) tests from browser bookmarks.
Share menu
Share info about selected items.
System menu
See Simon's status at a glance.
Hide in the Dock
Make Simon a background app.
Password protect
Require a password to access Simon.
Detect internet connection
Optionally go into an offline state when no internet connection.
Maximum tests
Maximum number of active test configurations.
15 - unlimited
depending on license
Geeky specs.
manual memory management
automatic memory management
Migration from App Store editions
Automatically import Simon Express & Simon Free data.
Sustainable pricing
Simon is priced to enable ongoing updates.
Great customer support
Dejal has a reputation for prompt and friendly support.
Minimum OS required
Use Simon 4 unless you're not on Yosemite yet.
OS X 10.6
(Snow Leopard)
OS X 10.10