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Arti vs I2P: catalog facts
Arti	I2P
Free Free and developed by the Tor Project.	Free The open-source software is available without a license fee.
Command line	Windows, macOS, Linux, Android
Official Tor Project client Written in Rust for memory safety	Every node relays, so the anonymity set grows with participation Built-in anonymous email, torrenting and site hosting
No graphical interface; Tor Browser is the easier option for browsing Aimed at technical users	Slow, and reaching the ordinary internet needs an outproxy Smaller network and fewer services than Tor
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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