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Piwigo vs Slink: catalog facts
Piwigo	Slink
Freemium Self-hosted Piwigo is free; Piwigo Cloud is a paid service with a free trial.	Free Free and open source under the AGPL-3.0 licence.
Web, Self-hosted	Web, Self-hosted
Same open-source core for self-hosted and cloud versions Plugin system and API	Private-by-default shares with optional password and expiry Local, SMB or S3 storage backends
Self-hosting requires your own web server Paid support is separate from the free version	Requires running your own server with Docker Focused on images rather than general files
Self-hosted, Hosted service	Self-hosted
Open source	Open source
License not stated	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 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.