Here is my attempt to archive r/homelab before it went dark. Google says there about 92,400 results for site:reddit.com/r/homelab, I have 2098, that’s only about 2% of it. Maybe there is something of use to you in that 2%.
Please don’t webscrape, if you want all the data you can get the raw BDFR archive at https://archive.douwes.co.uk/reddit/homelab.tar or the live web version at https://archive.douwes.co.uk/reddit/homelab-web.tar
A lot are on discord, but the mods are looking at an official Lemmy alternative. At the moment lemmy.ml is having significant issues so I’m not sure how that’s impacting federation, but hopefully they improve their servers soon…
Personally I don’t think Lemmy is really a great alternative in its current state especially with servers being able to defederate other servers, meaning that users registered on Beehaw for example can’t now view communities hosted on lemmy.world which seems to entirely defeat the purpose to me…
I die inside every time I see discord of matrix used that lol. I feel like homelab users have more than enough processing power to run their own lemmy instance or maybe a forum. The beehaw situation really isn’t good. I suppose you could use lemmy like a forum though? I hope they get something sorted out though.