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Hollo vs GoToSocial: catalog facts
Hollo	GoToSocial
Free Free to self-host from the GitHub repository.	Free Free to self-host.
Self-hosted	Self-hosted
Federates with Mastodon and the wider fediverse Works with existing Mastodon client apps	Lightweight server written in Go Federates with other ActivityPub software
Single-user only You must run and maintain the server yourself	Fewer features than Mastodon by design Not intended for very large follower counts
Self-hosted	Self-hosted
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.