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I2P vs Hyphanet: catalog facts
I2P	Hyphanet
Free The open-source software is available without a license fee.	Free Free and open source, developed by volunteers.
Windows, macOS, Linux, Android	Windows, macOS, Linux
Every node relays, so the anonymity set grows with participation Built-in anonymous email, torrenting and site hosting	Publishing without a central server or authority Friend-to-friend mode invisible to centralized servers
Slow, and reaching the ordinary internet needs an outproxy Smaller network and fewer services than Tor	Slower than the regular web because content is routed through peers Friend-to-friend mode needs trusted contacts already on the network
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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