I'm aware of kbin, mastodon, and lemmy. Are there any other federated applications out there?

Tree diagram of federated software, separated by protocol and use case, including ActivityPub and Matrix protocols.

Very neat, thanks for sharing! What do the dotted lines between non-Fediverse protocols and Fediverse platforms represent? Do those platforms use multiple protocols?
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- Im not sure, I just found it on wikipedia
- Do those platforms use multiple protocols?
  
  Yes
What are the common attributes between each app that allows them to be federated with each other? Users, a post with multimedia support (images, links, maybe videos), a comment thread, and what else? Can an app deviate completely from this user/post/comment model and still be federated? Do each app need to manually integrate with another app to be considered federated or is any app using ActivityPub automatically integrated to your app?
- Do each app need to manually integrate with another app to be considered federated or is any app using ActivityPub automatically integrated to your app?
  
  ActivityPub provides the framework, but a platform also has to be designed to support another platform. It's not automatic.
Here is the link to official page of that image

My favorite is PixelFed. I'm an artist, so Instagram was important for me, but for a few years now it's absolutely terrible (no reach at all with their special algorithms). PixelFed fixes all that, it replicates the feeling of IG as it was 8-10 years ago: chronological feed, tag-based, no extraneous features. I'm really enjoying it, as I can finally grow again my followship as an artist: https://pixelfed.org/

Bonus points for lack of normies posting crappy reels
How can I find you there ? I joined not long ago and I lack interesting people to follow. Also, curious to see your work :)
- Thank you!!! Here is my art account: https://pixelfed.social/EugeniaLoli
Is there interoperability between pixel fed and lemmy at all? I'm so sick of Instagram, this piques my interest
- There is interoperability between PixelFed and Mastodon for sure. I often get a lot of likes from there, rather than PixelFed itself.
Do you have any suggestions as to how to find people on there? I have it installed and am trying it out, but I'm running into a lot of the same problems I was having on Mastodon; it seems difficult to discover engaging content.
- You can follow me if you like book illustration art: https://pixelfed.social/EugeniaLoli Another way, is to search for tags. For example, if you like fishing, you search for that tag, and then you find ppl that post interesting fishing stuff.
Any great FOSS apps for that one yet?:)
So much good photos on there no generic popular spam crap like you get on Instagram

Here's a list of 130: https://the-federation.info/#projects

One I like not mentioned so far is bookwyrm, which is like a federated goodreads (track books you're reading, review them, read other's reviews).

Edit: the flagship instance is https://bookwyrm.social

I think it's worth noting that Mastodon is by far the most mature. Everything else is buggy and may not always work the way you might expect but I think many are still worth using if you can put up with the quirks.

Also worth noting that BookWyrm can import your books from a GoodReads export, so you can try it without risking much.
I just found Bookwyrm and love it! Now that's a great idea for a federated site.
Akkoma is also very stable and much faster than Mastodon.

https://akkoma.social/
- Still not sure what this is supposed to do based on the site? It's some kind of all-in-one fediverse thing? Doesn't help that they reference a ton of federated services that I've never heard of in the website
- And it's much easier to run (less resources) and easily accepts multiple frontend UIs.
is there any android app for bookwyrm?
- Yes and no. Yes an app exists, but it's not official, and the app is only a wrapper for the website. It may be better to "install" the website to your home screen using the option in your browser.
  
  If you want to check it out, it's not on Google Play, but you can get it on F-Droid if you have it, otherwise you can install the APK directly by downloading it here.

PixelFed is federated Instagram!

Thanks that’s exactly what I’m looking for!
@QuantumEyetanglement @Pickle_Jr If you mention Pixelfield than mention their pet project https://fedidb.org/
I come to Instagram to see pictures of my friends. None of my friends are going to be on PixelFed anytime soon. So why would I?

Unless PixelFed somehow becomes a massive new trend I don't really see the point.
- Because everyone uses the internet exactly like you do. :)
- It's called the Network Effect. Most people, like you, want to be on the platform that everyone else is using. Others want to be on the "best" platform (whatever that means for them) and when they find one they like, they'll start advertising it to others. Eventually, enough people will move to a new platform that it starts making sense for people like you to move there as well.
  
  Remember how everyone used to be on ICQ, then MSN Messenger, etc? It used to happen a lot with messaging and social media platforms until Facebook and Twitter got big enough to start buying and shutting down the competition. It's happening now with people leaving Reddit for Fediverse platforms like Kbin and Lemmy.
  
  There is nothing wrong with waiting for the Network Effect to push you to a new platform, if it ever does. The point of social media is being social - if you're there to interact with friends, you obviously want to be where your friends are.
- Getting a teeny bit slammed for your comment, but I think the simpler answer is: you probably wouldn't. If instagram is working for you and yours, then I'd imagine you'll stay there. That's totally fine. This is a thread about federated alternatives, though, so the overall subject may not apply to you.
  
  I like pixelfed because a) it doesn't have ads for 2/3 of the content, b) it doesn't have reels (which IMO go against the entire point of instagram to begin with), and c) I'm specifically not looking for pictures of my friends. For me, instagram is a platform for discovering art from other people. It still works for that, but there's so much other stuff on there getting in the way. Pixelfed is "back to basics" for what I'm looking for in an art sharing platform.

PeerTube, basically a federated YouTube-like

I looked at it and have no idea where or how to start as a creator. It's a badly federated mess as far as I can tell. Hope it improved eventually.
- Why do you think it's badly federated? I've never been unable to find my peertube account from anywhere I've tried - Mastodon, Firefish, Friendica, Pixelfed, or Lemmy.
- You have to find an instance that allows signing up, then you can create an account there
Recommended android app?
- newpipe.net supports peertube.

Guys the real place to look is https://fedidb.org/software

Peertube is a relatively popular federated-decentralized video platform, a couple of serious youtuber even have a mirror set there. But if you look for a place to share informal video with or without personal data it's better place than youtube (When reddit r/guitar had the weekly* first take challenge* I uploaded a few video on peertube because I don't want to tell google or the world about my bad but fun attempt jamming a guitar for an online challenge)
Pixelfed is a photo sharing app, I have an account there but don't use it as I am not that much in photography, They do even have an instance dedicated to artists
I heard about Calckey/Firefish/Misskey but not really sure what's the benefit over Mastodon
Diaspora* is the great old one of federated social network last time I opened it it was full of conspiracy nuts

Misskey has more features than mastodon, and firefish is a tweaked misskey fork with saner defaults, more tweaks and made by a furry

Something that's often overlooked as being federated: Nextcloud.

How exactly does federation on Nextcloud work? I use a hosted Nextcloud instance but it's just an OneDrive alternative for me.
- Same here. Now I’m curious.
- I think it's through the nextcloud social app, I haven't installed it though because my nextcloud is slow enough without it
  
  Edit: just checked and it has mostly negative reviews and it's listed as beta

I don't think it's federated but Matrix is decentralized

Federated under ActivityPub, no. But individual matrix home servers can federated with one another, so in that way yes.

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Calckey and Firefish: Mastodon but with extra bells and whistles like the ability to use emotes in place of likes.

The Firefish interface is also waaaaaay better than Mastodon's. Mastodon feels so archaic, but Firefish actually has a very engaging UI that makes exploring the platform actually fun.
- Yeah, I like the Firefish interface a lot more. I was able to follow the handful of people I followed on Mastodon seamlessly. Everything just looks better IMO.
And Firefish has so many more bells and whistles than that! Full-text search, antennas, quotes, drive, pages, channels, MFM.
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Owncast, a live video streaming platform, has fediverse integration.

What's the difference between Owncast, and Peertube's livestreaming function?
- Owncast is streaming only, PeerTube has streaming as a feature. If you're only looking to stream, run Owncast. It's lighter on resource usage, easier to set up, fewer moving parts. If you want video hosting with maybe streaming as a bonus, you want PeerTube.

There's Bookwyrm which is a Federated version of GoodReads.

Misskey and Firefish
They are microblogs like Mastodon but with much more functions.

They still communicate with Mastodon instances, I suppose ? it's all ActivityPub ? What kind of functions do they have ?

Nostr. It's a decentralized protocol working with relays and no instances.

Its filled with cryptobros and libertarians. Its a cesspool I wouldn't touch with a 10 foot pole.
- With a recommendation like that, I HAD to try it! Thanks!
- It has free speech and zaps are optional.

Services or applications. An instance is just a server.

Bu yeah, there are a lot more than those! See here

Fediverse.info Tildeverse.org

Here are a handful with descriptions. If you're interested in the wider fediverse explore that fedi.tips site.