Feediary is a free and open-source web-based RSS/Atom feed reader and aggregator. It allows you to subscribe to RSS/Atom feeds from websites and blogs and consolidate all your news and updates in one convenient app. Some key features of Feediary:
Overall, Feediary is a great option for those looking for a simple yet powerful RSS reader and feed aggregator that syncs across devices and combines all news/blog posts into one easy feed. The open-source development allows the app to constantly keep improving with new features and fixes added by contributors.