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n2n vs nebula: catalog facts
n2n	nebula
Free Free and open source.	Free The open-source software is available without a license fee. Hosting, hardware and…
Linux, Command line	Windows, macOS, Linux, Android
Layer-2 networking, so hosts appear to share one LAN Peer-to-peer traffic with a supernode for discovery	Works across several desktop, server and mobile platforms.
Configured by hand on the command line Requires running a reachable supernode	Requires certificate management and network configuration.
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
No account 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 September 22, 2026

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