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Piwigo vs PiGallery2: catalog facts
Piwigo	PiGallery2
Freemium Self-hosted Piwigo is free; Piwigo Cloud is a paid service with a free trial.	Free Free to download and run.
Web, Self-hosted	Web, Self-hosted
Same open-source core for self-hosted and cloud versions Plugin system and API	Follows your existing folder layout Runs well on a Raspberry Pi
Self-hosting requires your own web server Paid support is separate from the free version	Gallery rather than a full photo backup solution Needs a server to run
Self-hosted, Hosted service	Self-hosted
Open source	Closed source
License not stated	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 September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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