Trimgle is described as 'Web page and json monitor, is an extension for the most modern browsers, It is used to monitor any Web page, such as a price at Amazon; A search on Google or more commonly where an RSS feed service is not guaranteed' and is an app in the Web Browsers category. There are more than 10 alternatives to Trimgle for a variety of platforms, including Online / Web-based, Windows, Linux, Android and iPhone. The best alternative is Huginn, which is both free and Open Source. Other great apps like Trimgle are Distill Web Monitor (Freemium), Visualping (Freemium), PageProbe - Automatic Page Monitor (Free) and Wachete (Freemium).
Huginn is a system for building agents that perform automated tasks for you online. They can read the web, watch for events, and take actions on your behalf. Huginn's Agents create and consume events, propagating them along a directed graph.
Distill is a web monitoring tool. It can monitor RSS feeds, a webpage or a part of webpage. Alerts in the form of pop-up, audio or emails can be received. Featured highlights: • Content selection from any webpage including iframes.
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.
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.