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Shimmie2 vs ClyoCloud: catalog facts
Shimmie2	ClyoCloud
Free Free and open source to download and host yourself.	Free Free and open source under the AGPL-3.0 licence.
Self-hosted	Web, Self-hosted
Tag-based organization and search for large image collections Runs on a standard PHP web server	No database to administer Metadata stored in portable sidecar files
Needs a server and some web hosting knowledge to set up Booru-style interface is built for tagging rather than photo albums	Sidecar files add an extra file next to each item Young project with limited public information
Self-hosted	Self-hosted
Open source	Open source
License: GPL-2.0	License: AGPL-3.0
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 October 2, 2026

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