@dzwiedziu @apps Yes it's a very common occurrence for folks to associate Mastodon as the Fediverse itself - I myself did this initially, and truth be told, it wasn't all that far from accurate.
Initially, GNU Social was one of the earliest implementations of a server platform heralding the beginning of the Fediverse - based on the OStatus protocol, then came ActivityPub and other server platforms, Mastodon actually doing the most for the Fediverse as far as it being accessable and pretty (with that really cool logo they have of the happy elephant).
Diaspora was an early Fediverse player with promise, but with it's own protocol so it is still rather overlooked and doesn't incorporate ActivityPub out of the box, instead relying upon its own federating protocol (But Friendica bridges that Gap, so I can actually do some stuff like interact with folks on Diaspora from within Fedilab... to some degree).
Most platforms initially tried to adopt the use of both OStatus and ActivityPub but both Mastodon and Pleroma have since dropped OStatus. I think otther platforms that don't have ActivityPub integration will soon start to lose their viability, as OStatus appears to be on it's way out and replaced, in large part, by ActivityPub.
Where I believe the biggest differences can be made, is in the support of "Fediverse" in general, by applications, rather than particular server platforms, and Fedilab goes a long way toward that goal.
Of course, supporting more platforms means more development as well as a larger APK, so there's that ;)
As far as development, however, contributions to the project can be made here and will certainly make a HUGE difference in the longevity, as well as keeping development aggressively active :)
They don't push this, as the folks on the Fedilab dev team are rather modest, but I do, so I recommend that we all give something, whatever we can, however much or little, because every little bit helps, and in the end, if benefits us "the users", most of all.
Developing
#Fedilab has been mostly a labor of love and for the
#Fediverse itself, and they've had to brave some pretty sickening haters due to their stance on keeping free software free (as in Libre), as things have turned out pretty much as they are supposed to with the users themselves and the server admins deciding for themselves what kind of view into the Fediverse they want, and that's where those choices need to be made, not in applications that cripple the freedoms that even those we most oppose, and perhaps despise, should themselves enjoy.
Here's the link where we can all contribute to the continued development of Fedilab and the rest of the Fediverse suite of applications and services that they continue to improve:
https://fedilab.app/page/donations/