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Viscosity vs Pritunl Client: catalog facts
Viscosity	Pritunl Client
Paid One-time purchase of $16 after a 30-day free trial, no subscription.	Free Free to download and use, with no registration or payment required.
Windows, macOS	Windows, macOS, Linux, Command line
Native interface on both macOS and Windows Fine-grained DNS and routing control	Supports both OpenVPN and WireGuard Imports standard OpenVPN configuration files as well as Pritunl profiles
Paid after the trial OpenVPN only, no WireGuard	Licence terms are not clearly stated as an OSI licence Some profile import features assume a Pritunl server
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account 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 October 2, 2026

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