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szurubooru vs Shimmie2: catalog facts
szurubooru	Shimmie2
Free Free and open source to host yourself.	Free Free and open source to download and host yourself.
Self-hosted	Self-hosted
Tag-based search across a personal image collection Runs on your own server, so images stay private	Tag-based organization and search for large image collections Runs on a standard PHP web server
Requires a server and setup work Aimed at tagging rather than phone photo backup	Needs a server and some web hosting knowledge to set up Booru-style interface is built for tagging rather than photo albums
Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License: GPL-2.0
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.