Reddit, Hacker News, teddit, Steemit, Minds, Lemmy, Tildes, SaidIt.net, Slashdot, Folkd, Phuks, Lobsters, Indie Hackers, Raddle, Discuit, MetaFilter, WikiSpooks.com, Scuttlebutt.nz, Postmill, Pythonic News, StackTrender are some alternatives to /kbin.