Compare software

snac vs Holos: catalog facts
snac	Holos
Free Free and open source.	Free Free and open source under the AGPL-3.0 licence.
Linux, Self-hosted	Android
Very small footprint in portable C Actively maintained with frequent releases	Your device is your ActivityPub server End-to-end encrypted direct messages
Minimal feature set compared with Mastodon Requires running your own server	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
No account needed	Not stated if an account is needed
Needs internet	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.