@realcaseyrollins These seem to be the difference between them (I will describe them all in relation to #Mastodon):
#QOTO: Just #Mastodon but with quote posts, is currently aligned with #Mastodon 3.2.1
#Smalltown: Allows admins to enable or disable DMs, private posts, private accounts, bookmarks, links, and the configuration of custom icons and favicons. Adds a “post queue”, which forces admins to approve posts before they are published, the “post digest”, an admin-curated selection of posts that are sent to users once each day, “featured topics”, which is essentially a configurable bundling of hashtags, and the ability to restore deleted posts. All #Mastodon branding has also been removed.
#Ecko: Unclear, although the about page of the flagship instance claims that it is “unblocking”, so perhaps blocking and muting is disabled.
#Hometown: Local-only posting, in-line full blog post support, exclusive lists (you can add users to lists without their posts being in the home timeline), themes, and custom max post limits.
#GlitchSoc: A lot (read the differences here: https://glitch-soc.github.io/docs/)
#Koyuspace: Everything from #GlitchSoc, plus #Tenor support, custom theming and logos, and native #Jitsi integrations.
#GlitchCafe (AKA #PluralCafe): Everything from #GlitchSoc, other changes are unclear.
#Fedibird: Subscriptions that add content from hashtags and unfollowed users into the home feed, emoji reactions, quote posts, groups (in beta), and ephemeral posts.