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Zenphoto vs Piwigo: catalog facts
Zenphoto	Piwigo
Free Free and open source, funded by donations.	Freemium Self-hosted Piwigo is free; Piwigo Cloud is a paid service with a free trial.
Self-hosted	Web, Self-hosted
Gallery-first CMS with a blog and pages Multi-user with user rights	Same open-source core for self-hosted and cloud versions Plugin system and API
Requires your own web hosting Publishing tool rather than a phone photo backup	Self-hosting requires your own web server Paid support is separate from the free version
Self-hosted	Self-hosted, Hosted service
Open source	Open 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 24, 2026	Official website Full listing and sources Checked September 23, 2026

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