So today I joined #kbin , and it's only been a minute, but I'm liking it so far. The mobile and desktop web interfaces look good despite not using Javascript, there's a variety of topics already being discussed, etc. I stopped using #Reddit very much a while back because every time I posted, there was about a 50% chance it would get auto banned or deleted by a bot or overzealous mod because I didn't include the right "flair" or something. I'm on kbin.social .
I have a knowledge gap
What's the practical difference between different #ActivityPub based platforms?
Is it really more than UI, essentially like the choice between locally installed email clients?
Or is there more to it, with some functionality that doesn't make it onto other platforms in the Fediverse?
I had same curiosity re #pixelfed
I think this link might help answer your question.
ActivityPub has a lot of different moving parts and different platforms may implement different subsets of the standard. Fundamentally maybe it is basically different UIs, but still it's different UIs working with different parts of the standard.
So here is an example of how one platform, Mastodon, translates parts of the standard into its interface.
For example, the document shows that what Mastodon refers to as a toot is what ActivityPub refers to as a status (or something like that, this is from memory).
@volkris Thanks, much appreciated indeed 😊. I was familiar with those broad strokes and then just found this wee article, which answered the questions that I had failed to ask clearly:
https://dalliance.net/vPre2/lemmyvskbin