RSS and Atom have been around for a while already. Both formats are old, but not old-fashioned! These standardized, computer-readable web feed formats allow for syndication on the web, *feeding* materials from one place to the other.
You can subscribe to a RSS or Atom feed through a *feed reader*. A few suggestions:
Or have a look in the features/extentions of your favorite email client and browser!
More suggestions for feed readers can be found [here](https://en.wikipedia.org/wiki/Comparison_of_feed_aggregators).
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**ActivityPub**
You can also subscribe to the ActivityPub feed through one of the Fediverse projects.
The Fediverse is a federated network of different software projects, instances and communities, that can operate on their self-determined conditions and yet communicate with each other.
The ActivityPub feed will be posted from the <https://social.servus.at> Mastodon instance, but can be followed from any other instance on the Fediverse. A few suggestions:
* [social.servus.at](https://social.servus.at)
* [post.lurk.org](https://post.lurk.org)
* [fosstodon.org](https://fosstodon.org)
More Mastodon instances can be found here: <https://joinmastodon.org/>.
Or if you want to dive deeper into the Fediverse, this is a good place to start: <https://fediverse.party/>.
And diving into the ActivityPub protocol can be conveniently done via here: <http://www.activitypub.rocks/>.