jointhefediverse.net seems to be a commonly linked resource for directing people to join the Fediverse.
Curiously, it does not list Lemmy under the list of Reddit alternatives. Their GitHub README explains why.
Previous relevant discussion: https://lemmy.ml/post/78808
Linux Foundation survives on Microsoft’s financing. Firefox main source of income is Google’s money. That’s like pointing out that we breathe nitrogen. Yes, it is almost impossible to avoid capitalism because we live immersed in it as a society. But it’s not an reason to stop pointing it out and trying to find more ethical and sustainable alternatives.