Akregator is the default KDE RSS/Atom feed reader and it does it very well. Without being bloated with a lot of features, Akregator takes a rather simple approach, yet providing all the needed features one would expect from a feed reader. You have an integrated web browser, tabs, feed fetching interval configuration, feed archiving, system tray notifications and a few other notable features shown below. Akregator is part of the KDE Kontact Suite.

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