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Eddie vs Viscosity: catalog facts
Eddie	Viscosity
Free Free and open source under GPLv3; the AirVPN service itself is separate.	Paid One-time purchase of $16 after a 30-day free trial, no subscription.
Windows, macOS, Linux, Android, Command line	Windows, macOS
Network lock and leak prevention Works with other OpenVPN or WireGuard providers, not only AirVPN	Native interface on both macOS and Windows Fine-grained DNS and routing control
Tunnel over SSH or SSL requires an AirVPN subscription Interface and defaults are oriented around AirVPN	Paid after the trial OpenVPN only, no WireGuard
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
Not stated if an account is needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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