And by the way, ownCloud also has a News reader: https://apps.owncloud.com/content/show.php/News?content=1680... (we’re working on a redesign of the appstore, don’t worry ;)

There’s apps for Android & iOS which download all items for offline reading. The Android app can even download podcasts and videos of Youtube channels.

There’s also apps for OS X, Linux, Firefox OS, Blackberry and Jolla as far as I know.