The software is nothing special and can be installed by anyone: Nextcloud [1] running the News [2] app. The virtue of the thing is that you can point it at any RSS/Atom feed you want and have the result appear in categories of your choice. This is not limited to 'news' of course, any type of feed will work. I use it to keep up with activities on selected Github repos, commits show up as news items in the feed. There are accompanying apps for mobile devices but I tend to rely on the web interface even when using something mobile.