Page Delta is described as 'free, easy to use website monitoring, page checker, webpage change detection tool. Never miss out on a website change again'. There are more than 10 alternatives to Page Delta, not only websites but also apps for a variety of platforms, including Windows, iPhone, Google Chrome and iPad. The best alternative is Visualping, which is free. Other great sites and apps similar to Page Delta are PageProbe - Automatic Page Monitor (Free), Wachete (Freemium), WebSite-Watcher (Paid) and Sites Watcher (Freemium).
Sites Watcher checks web pages that interest you for changes. When changes are found, Sites Watcher will show you current page version with highlighted updates. As well as that, you can see previous web page version and current page version from internet.
Versionista is an online service that alerts you when a Web site changes. It shows you what's been added & removed to any Web page. It records a full page screenshot, and lets you use powerful inclusion/exclusion filters.
Fluxguard uses Google headless Chrome to monitor entire sites for changes. It provides 3 different levels of change monitoring, pixel change detecting comparing screenshots, code-level comparison of the rendered DOM, and extracted text comparison.
Detect changes to any public-facing webpage or website.Get alerts whenever ChangeTower detects changes that match your custom criteria set. Schedule your checks, set a sensitivity level, and define your change alert criteria. You’ll be the first to know when a page changes.