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Holos vs GoToSocial: catalog facts
Holos	GoToSocial
Free Free and open source under the AGPL-3.0 licence.	Free Free to self-host.
Android	Self-hosted
Your device is your ActivityPub server End-to-end encrypted direct messages	Lightweight server written in Go Federates with other ActivityPub software
Relies on a relay to stay reachable while the device is offline New project, version 1.0.0 released in 2026	Fewer features than Mastodon by design Not intended for very large follower counts
Downloadable app	Self-hosted
Open source	Open source
License: AGPL-3.0-only	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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