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Viscosity. OpenVPN Client For Mac & Windows
Free for 30 days. Mac & Win.    Instant and secure. 



Your Order

Purchase Viscosity to remove the 30-day trial limitation and help us develop more features! Each license includes email support and free updates for all future 1.x versions.

Viscosity (Mac) I would like  
copy at $9 each  
Viscosity (Windows) I would like  
copy at $9 each  

Simply adjust the quantity above to see an instant discount.
Specific volume licenses and educational discounts are available.

Your Details






Your Total: $9.00 USD

Buying Viscosity

The Viscosity store uses PayPal to accept payments. You can pay with both your Credit Card or your PayPal account.



Once your payment has been made your license details will be sent to the email address entered to the left. To register Viscosity, click 'Register' under the 'About' section of the Preferences window.

Payment Options

If you're unable to pay via Credit Card or PayPal using our online store, we also offer a Kagi store which accepts a wide variety of payment types.


By using Viscosity you agree to the terms of the Viscosity License Agreement. Refunds are governed by our Refund Policy. We will never give your details to another company. Please see our Privacy Policy for more information.

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