Website Acceptance Monitoring
Ruby CSS JavaScript
Switch branches/tags
Nothing to show
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.

TinyMon - Website Acceptance Monitoring

TinyMon is a small tool to automatically and periodically monitor that features of your website are still working. It basically emulates a browser and does health checks composed of steps, like a normal user would do. The steps are easily defined and configured over a nice user interface. Internally, the wonderful Webrat framework is used, so the engine is powerful and well tested.

Use cases

  • Use TinyMon to monitor if your on-site search feature is working as expected
  • Fill in login forms and log in with a test account
  • Do a complete transaction for your online shop
  • Monitor your signup process (e.g. sign up a user, click activation link, check welcome page etc.)


  • Supports all web technologies including HTML5 and Javascript
  • Available in two languages: English and German
  • Automatically updated overview
  • Overview of recent activity
  • Test duration graph
  • Log output
  • Email on failure
  • Retry 3 times on failure to avoid false negatives
  • Extreme Feedback Device-like overview
  • Choose check interval per health check (every minute to once a day)
  • Checks IMAP email inboxes (important for monitoring signup processes)
  • Login mechanism
  • Group health checks in accounts
  • Assign any number of users to any number of accounts
  • Prowl notifications
  • Create similar health checks from templates
  • Even create your own flexible health check templates with a nice user interface
  • Import health checks from CSV files
  • Start as many workers as you want when using Resque
  • Bulk update health checks
  • Mark your check runs with the currently deployed revision to quickly identify bad deployments

Missing Stuff

  • Configuration has to be done by hand
  • Some step types might be missing
  • Alerts other than by email and Prowl (e.g. SMS)
  • Nice way of distributing the application
  • Nice way to setup the database
  • Nice way of starting all needed processes


Clone the repository. Then run

bundle install
rake db:setup:all

You will also need to install phantomjs and pngcrush.


This is pre-alpha. So there you need to start the processes manually. Start the server like any Rails application:

rails server -e production

Start the background checker process with

RAILS_ENV=production script/scheduler


Version 0.1.0 to 0.2.0

Version 0.2.0 added Javascript support via Capybara + PhantomJS. In addition to the usual upgrading, do the following steps.

  • Make sure you run Ruby 1.9.3
  • Install PhantomJS
  • You may uninstall wkhtmltoimage
  • Migrate the YAML columns in the database so that special characters are UTF-8. These columns are, health_check_template_steps.step_data_hash, config_options.value, check_runs.log

Differences in behavior:

  • PhantomJS complains about ambiguities when finding elements, so these must be resolved in the steps
  • Link texts should not include HTML tags anymore
  • Check runs take about twice the time
  • Capybara expects correct CSS selector syntax

Version 0.2.0 to 0.3.0

Version 0.3.0 is an upgrade to Rails 4 and a complete UI redesign. In addition to updating the code and the bundles, do the following steps:

  • Make sure you run Ruby 2.1.1. It is recommended you use RVM or rbenv for that.


Do the Github dance. That means fork the project, make your changes, and send me a pull request.


TinyMon was written by Thomas Kadauke.

Getting it, License and Patches

Get the complete source code through For installation instructions, see above. License is MIT. That means that you can do whatever you want with the software, as long as the copyright statement stays intact. Please be a kind open source citizen, and give back your patches and extensions. Just fork the code on Github, and after you’re done, send us a pull request. Thanks for your help!