Congrats,
Tracker!
Um, actually, it depends on what do you name "abandonware scene". Abandonware was hot when it was fresh - 1995 game is quite good when you are in 2000+. Now it's less populated, if we are speaking about the same period (1980-1995), but, I bet, there is still a lot of activity if speaking about 2005+ games.
Not my thing though, because I moved to legal on this time range, thanks to Steam.
Speaking about "true" Abandonware, pre-2000s one, I can name three hot points and one at least warm.
old-games.ru make a great efforts to preserve all Abandonware - seeking it, buying it and tracking it (even if I, personally, shocked with their fond of Korean games), Abandonware France does the same for French games, and
eXo do a great work to make playable DOS-collection of _everything_ (i.e. one game, best version, preferrably English one to be playable). I am resident of his Discord channel, so I can see it, and participate too.
And "warm" point is DOS-collection. They intended to collect
everything about DOS-games, so it makes it less organized and less usable than eXo's one, but also bigger and more universal too. Not much action there, unfortunately, but it is.