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Pritunl vs Viscosity: catalog facts
Pritunl	Viscosity
Free The open-source server and client are free to download and run yourself.	Paid One-time purchase of $16 after a 30-day free trial, no subscription.
Windows, macOS, Linux, Self-hosted	Windows, macOS
Supports OpenVPN, WireGuard and IPsec from one web interface Multi-cloud site-to-site links through Pritunl Link	Native interface on both macOS and Windows Fine-grained DNS and routing control
You have to run and maintain the server yourself Aimed at organisations, so it is more than a single user needs	Paid after the trial OpenVPN only, no WireGuard
Downloadable app, Self-hosted	Downloadable app
Open source	Closed source
License not stated	License not stated
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 23, 2026	Official website Full listing and sources Checked September 23, 2026

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