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i2pd vs I2P Zero: catalog facts
i2pd	I2P Zero
Free Free to download and run.	Free Free and open source under the BSD-3-Clause and Apache-2.0 licenses.
Windows, Linux, Android, Command line	Windows, macOS, Linux
Written in C++ rather than Java Android app and desktop app available	Includes a graphical interface and tunnel controls Provides SOCKS and SAM interfaces
Useful only for services reachable over I2P Running a well-connected node works best when left on continuously	It is not a reimplementation of I2P
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: BSD-3-Clause OR Apache-2.0
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 24, 2026	Official website Full listing and sources Checked October 8, 2026

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