Simon 5 is coming soon!
Simon version 5 is currently in beta testing. It is a massive update, introducing a much-requested feature: syncing the Simon data between multiple Macs, plus a Simon Status service, a Link Checker filter, improved Find filter, iMessage and Speak Error notifiers, a new app icon, and much more.
Important: please note that Simon 5 requires a minimum of macOS 10.12 (Sierra), and will be a paid upgrade from Simon 4 after the beta. Purchasers since September 1, 2020 automatically get a version 5 license (that also works in previous versions).
Re: Check for closing </html> tag in Source code
Sure, it's easy to ensure there's a
</html>
tag in the page source.The simplest way is to use a Find Required filter to search for that text; that will result in a failure if it isn't present. You can add that filter to a test that also has change detection; you can have any number of filters in a test.