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

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