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Hydrus Network vs Eagle: catalog facts
Hydrus Network	Eagle
Free Free, with source published on GitHub.	Paid Paid software bought from the developer's site.
Windows, macOS, Linux, Self-hosted	Windows, macOS, Browser extension
Tag-based search across very large collections Imports files and tags from disk and websites	Handles large collections of images and design files Several ways to categorize and search assets
Takes time to learn compared with ordinary photo libraries Interface is dense and built for power users	Paid software with no free tier shown Windows and macOS only
Downloadable app, Self-hosted	Downloadable app, Browser extension
Closed source	Closed source
License: WTFPL	License not stated
No account needed	Not stated if an account is needed
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 24, 2026

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