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Viscosity |   The ultimate OpenVPN client.

Viscosity is a first class OpenVPN client that lets you
secure your network with ease & style. For Mac & Windows.

Free for 30 days. Mac & Win.    Instant and secure. 



Key Features

Viscosity has been designed from the ground up for both macOS (10.11 to 10.14) and Windows (7, 8.1 & 10) users.


VPN For Everyone.
Completely configure OpenVPN connections through an intuitive interface, without any need to know complex commands.

Proven Technology.
Viscosity is in use everywhere, from small business to Fortune 500 companies, schools, universities, at home and on the road.
Traffic Statistics.
Viscosity monitors your OpenVPN connections to ensure you know all the important network and connection details in style.


DNS. Done Right.
Viscosity fully integrates with Mac OS X's advanced DNS system to allow custom DNS servers and search domains to be used while connected.

Enterprise Support.
Easily bundle Viscosity with settings and connections so your users don't have to worry. Create simple deployable connection profiles.
System Protected.
The Mac's keychain and Windows's credential system are used to make sure your details are kept safe and secure.


Script Everything.
Control Viscosity using AppleScript, or call custom AppleScript or Batch/Vbs scripts when a connection connects or disconnects.
More. Much More.
Smartcard/token (PKCS#11) support, menu folders, multiple connections, OpenVPN-AS support, proxy integration, IPv6, and more!


New to VPN?

Viscosity makes it easy for users new to VPNs to get started. Its clear and intuitive interface makes creating, configuring, or importing connections a snap. Read our detailed "Introduction to VPN" guide for an extensive introduction to VPNs and how to get started using Viscosity.


Experts Welcome

As well as being welcoming to new users, Viscosity caters for power and expert users. Viscosity allows for full control over VPN connections, powerful routing options, running custom scripts, controlling Viscosity using AppleScript, and much more.

  IT Administrator?

Viscosity has been designed for both small business and enterprise. Easily make connection bundles for your users, or even completely preconfigure Viscosity with all settings and connections. You can even auto-mount shares and open apps to make life easy for your users.


What People Are Saying

  • Big shout-out to @sparklabs! Viscosity is excellent with constant updates and flawless operation. #wortheverypenny #bestvpnclient

    @daveprovine | Twitter
  • Completely won over by Viscosity, an OpenVPN client for Mac - even working with company firewalls, and #GFW

    @jonah_kessel | Twitter
  • I'm really pleased with Viscosity: [link]. It's an extremely elegant #Mac #OpenVPN client solution.

    @noviantech | Twitter
  • If any of you are using tunnelblick, stop. Switch to Viscosity. Your life will be better instantly.

    @btmerr | Twitter
  • If you need a VPN client for OS X, Viscosity is the way to go.

    @willyb321 | Twitter
  • Need a OpenVPN client for Mac OS X? I've found and love Viscosity: [link]

    @jonathansherwin | Twitter
  • Hat tip to @sparklabs for Viscosity. It's the OpenVPN client I'd write if I had to. Which I don't, because they wrote it.

    @landonfuller | Twitter
  • If you're using #OpenVPN and you're not using #Viscosity then you're doing it wrong :) @sparklabs - Thanks for an awesome app!

    @systemcentersyn | Twitter
  • Just bought Viscosity from @sparklabs, should have done this a long time ago

    @Breefield | Twitter
  • Just purchased Viscosity for Mac; Lovely VPN app by the great folks at @sparklabs .

    @spendyal | Twitter
  • Love Viscosity from @sparklabs. Easy install, it just works. Reliable OpenVPN connections for Windows and Mac.

    @clemensmol | Twitter
  • Switched from Tunnelblick to Viscosity. Even simpler, works smoother and has a neat and pretty interface: [link] #openvpn

    @hukl | Twitter
  • Just set up Viscosity OpenVPN client for Mac. Works like a charm.

    @CharlyBr | Twitter
  • I just downloaded Viscosity after toiling with the various OpenVPN offerings... I must say, I have fallen in love! Keep it up!

    @MilesKjeller | Twitter
  • Spectacular #OpenVPN client. Simple, efficient, only 9 bucks -Yea @sparklabs all my VPN's in one tidy place. Sweet!

    @farago | Twitter

Free for 30 days. Mac & Win.    Instant and secure. 

Follow us on Twitter @sparklabs - Viscosity 1.8.2 is now out for both macOS and Windows! TLS 1.3 and additional cipher support,... ()
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