Castalia Social is a private, federated social network for the Castalia Institute community — built on open protocols, free from algorithmic feeds and corporate surveillance.
Why Federated
Built on ActivityPub, the same open protocol behind Mastodon. Follow and interact with millions of users across thousands of independent servers.
No ads, no tracking, no data harvesting. Your posts, your followers, and your attention are not products to be sold.
Run by the Castalia Institute, for its members. No algorithm decides what you see. Your timeline is chronological and unfiltered.
Speak freely within community guidelines. No shadow bans, no suppression, no opaque content moderation by distant corporate teams.
Your account is yours. Migrate your followers and data to any other ActivityPub server at any time. No lock-in, ever.
Powered by GoToSocial, a lightweight, free-software ActivityPub server. Every line of code is auditable and transparent.
Connect Your Way
Ivory
Ice Cubes
Mona
Tusker
Tusky
Fedilab
Megalodon
Elk
Phanpy
Whalebird
Sengi
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