WebChangeMonitor is an Open Source app that allows you to monitor multiple webpages tracking changes based on webpage content. 32-Bit available.
WebChangeMonitor permits you to monitor several protocols, including HTTP and HTTPS. It also lets you view and record any webpage content differences. It is essentially a hybrid RSS reader with some options not offered by strictly a reader, like displaying the GUID for the web page.
Set up for WebChangeMonitor is simple; add your target page information; if there is an issue, the app will let you know immediately. The UI is equally simple with a minimalistic display. Still, it does include several configuration settings to fine-tune the output to your needs like check intervals, comparison of web content against saved data on your machine, and more.
RSS Guard is an RSS/ATOM feed aggregator developed using the Qt framework and supports online feed synchronization. A zero-dependency portable version is also available.
Royal RSS Reader allows you to read posts on RSS feeds and check them on startup and, if you like, periodically for new posts on RSS 0.91/0.92/1.0/2.0/Atom feeds.