Hey, I’m pretty new to the concept of the Fediverse and would like to explore it more. I do think I know how it works, but I was wondering this: is there an all-in-one app for it? Say, one that allows you to browse Lemmy and Mastodon at the same time, and possibly even more platforms?
There’s no all-in-one app for it yet, as there are different implementations and different APIs for different platforms (is like asking for a single app for facebook, twitter, reddit, instagram, youtube, tiktok). However, all of the ActivityPub platforms can interconnect (aka Federate) whith each other, so while the interface will not be optimized for it, you can view content from Mastodon on Kbin, or from Kbin on Lemmy, etc. The most popular services in the Fediverse right now seem to be Mastodon and Lemmy, but also Pleroma, Peertube, and Pixelfed are getting attention lately. View more Fediverse projects at https://fediverse.party/
Kbin is the one I like best, because it has a view for Threads (similar to Reddit) Microblog (similar to Twitter & Mastodon), People (a directory of users you can follow), and Magazines (similar to a directory of subreddits). And from Threads you can suscribe to threads in Lemmy or kbin, from Microblog you can suscribe to Mastodon or Kbin users to follow, from People you can follow users, and from Magazines you can suscribe to topics you like.
They are working on an API for it as well as some apps for it, but for now you can access the website of your favorite instance and install as a progressive webapp on your mobile.