Viscosity
Viscosity
1.8.5

4.4

Viscosity free download for Mac

Viscosity1.8.5

02 April 2020

Graphical user interface for OpenVPN.

Overview

Viscosity is a first class VPN client, providing everything you need to establish fast and secure OpenVPN connections on both macOS and Windows. Viscosity caters to both users new to VPNs and experts alike, providing secure and reliable VPN connections. Whether remotely connecting to your workplace network, home network, VPN Service Provider, or other setup, Viscosity ensures it's done with ease and style.

With Viscosity and OpenVPN you can securely connect to your home or company network from a remote location, protect your network traffic when using public or wireless networks, access websites with country restrictions, and tunnel through restrictive firewalls and proxy servers to give your computer full Internet access. Viscosity can connect to any VPN server running OpenVPN, including most popular free and commercial VPN providers. Viscosity allows connections to be completely configured through a GUI, without any need to know how to use the command-line or OpenVPN's configuration file syntax. Advanced users still have full manual control over configuration options if desired.

What's new in Viscosity

Version 1.8.5:
Improved:
  • Workaround to allow the PKCS#11 driver for SafeNet tokens to load
Updated:
  • OpenSSL updated to version 1.1.1f
Fixed:
  • Full DNS mode on split-routed TAP connections using DHCP assignment
  • Custom menu item scripts not running
  • Crash when disconnecting a VPN connection
  • Crash in Viscosity's helper tool
  • Various bug fixes and enhancements
Removed:
  • OS X 10.11 is no longer supported

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How would you rate Viscosity app?

59 Reviews of Viscosity

1
Atalantia
25 March 2019
Version: 1.7.14

Most helpful

Doesn't configure the DNS Addresses for the VPN provider. It stays with the same given by the normal internet provider. Some services work, some not. Shimo works on that issue.
(1)
5
devonsauce
19 May 2020
Version: 1.8.5
The best VPN app you can get!
(0)
0.5
Macs-Pain
24 May 2019
Version: 1.7.15
Newest version is always crashing. Not usable...
(0)
Show comment (1)
1
Atalantia
25 March 2019
Version: 1.7.14
Doesn't configure the DNS Addresses for the VPN provider. It stays with the same given by the normal internet provider. Some services work, some not. Shimo works on that issue.
(1)
Show comments (2)
5
Macjogi
19 January 2019
Version: 1.7.13
Best VPN tool ever seen. Using it also on Windows. Pro: You can double connections if e.g. the company profile only using company addresses but you want to be VPN'd on all ports.
(3)
Big Johnson
17 January 2019
Version: 1.7.13
Developer is a LIAR.

It’s been more than 4 years since they said "we are currently working on adding a feature to Viscosity to easily block traffic leaks from occurring."

Instead they’re worried about trivial things like "compatibility with menu bar managers" and "main menu automatic resizing and positioning"

No kill switch = NO WAY should anyone use this dangerous app!

Users are putting their security and privacy at risk and may end up receiving a copyright infringement notice if the connection is dropped while downloading.

Lack of a kill switch led me to purchase a VPN service whose app DOES have one. Now if I could just remember to always start it before opening my torrent client.
(2)
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Retired Under Attack
30 December 2018
Version: 1.7.12
The price is wrong, here is $ 9 but when I go buy it tells me $ 14. We call this misinformation. The user environment has changed from the older version. I do not know if this makes its operation more complicated, but I can not rate it with speculation.
(0)
5
macjogi
10 April 2018
Version: 1.7.8
Most of us knowing Tunnelblick, yes. I use Viscosity because it is much more smoothy and very low cost. Only a green or red bubble nothing more. Great!
(3)
5
aarongoldstein
13 February 2018
Version: 1.7.7
very useful and easy to use app
(3)
5
Mindplay
09 January 2018
Version: 1.7.6
Working pretty well to me :)
(3)
Samadams
20 October 2017
Version: 1.7.5
What's going on with sparklabs.com? The site has been down for over 2 weeks. Have they gone out of business? I've recommended to several people in the past week that they buy Viscosity. But now the app can't even be downloaded to try out, let alone to purchase.
(0)
Big Johnson
15 September 2017
Version: 1.7.4
STILL NO GD KILL SWITCH!!!

Went to be last night with torrents downloading, woke up to find Visocity yellow and "authenticating" while downloads were proceeding at nearly 1 MBps.

Now more than THREE YEARS since SparkLabs said "We are currently working on adding a feature to Viscosity to easily block traffic leaks from occurring."

I believe the spark has died!


Still no way to disconnect from multiple VPNs at once - you must click each connection individually.
I often add up to five or more before one connects, then I must click each of the others to disable, and that takes two clicks for each because the menu closes each time you click one.

Stupid annoyance that should have been fixed LONG AGO like the critical traffic leak!

NO STARS FOR YOU! ½ only. Come back one year!
(3)
Show comments (4)
2.5
Macs-Pain
06 June 2017
Version: 1.7.1
Does no longer reconnect after a disconnect. Please fix.
(2)
Big Johnson
17 November 2016
Version: 1.6.7
Oh look:
Another update with "bug fixes and enhancements."

BUT STILL NO KILL SWITCH!
This is a vital component of a VPN app!
Without it a user's privacy (and maybe their freedom) is at risk.

It’s been more than 2 years since the dev said "We are currently working on adding a feature to Viscosity to easily block traffic leaks from occurring."

PROVE IT ALREADY!
Why is Viscosity the only VPN app without one?
This app shouldn’t even be sold until the security leaks have been addressed!

(3)
0.5
Atalantia
01 November 2016
Version: 1.6.6
This app does not even start under 10.9 Everything else works except this program. So it is simply useless.
(0)
Mcr
13 September 2016
Version: 1.6.6
To second the comments by @BigJohnson, I posted a comment on THIS macupdate page several months ago, outlining numerous security issues, missing features, and unfullfilled promises by the developer, and that comment has now disappeared from this macupdate forum. Which begs the question, did Sparklabs as the developer have the ability to remove a post on MacUpdate, or did MacUpdate assist them?

My observations were spot on, but apparently Sparklabs can't handle users exchanging thoughts and relaying their experiences on a open, PUBLIC forum for all to read.

I WAS a user of Viscosity but got tired waiting on promises to fix holes and upgrade features.
1) implementing KIll switch fucntion requires user to manually input scriptiing code...seriously, in this day an age to require the user to type in scripting commands for critical feature? This has to be done manually for EVERY connection definition you may have. As a user of PrivateInternetAccess, there are literally dozens of servers available.
https://www.sparklabs.com/support/kb/article/preventing-network-and-dns-traffic-leaks/

2) on top of that, the scripts provided to implement kill switch protection, IS FLAWED. I personally watched while during a download, I lost the VPN connection and my download continued on an unprotected connection.

3) Developer admits on their site that the licensing code in their Mac version has been hacked by pirates for years, and promised to implement cross-platform licensing. That's been YEARS since that has been on the website and not fixed, meaning if you want Mac and Windows you have to buy separate licenses, and since pirates know now to hack the activiation, legit users are paying for others to use the app.
https://www.sparklabs.com/support/kb/article/can-i-use-my-viscosity-for-mac-license-on-windows/
Seriously, if you are going to admit on your own site that your app has been hacked, and you don't do anything about it for YEARS, what confidence is that supposed to engender from end users?

There were many other flaws I mentioned in my initial post, won't bother repeating it all here as i wouldn't be surprised if I come back in a few weeks and this post is no longer here...
(3)
Timmyb
06 September 2016
Version: 1.6.5
How is using one of the third party standalone apps such as Viscosity better than using the built-in VPN connections from the macOS Network settings?
(0)
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Big Johnson
27 August 2016
Version: 1.6.5
BE MINDFUL WHAT YOU POST HERE!

After posting some critical comments below, I've been banned from the Sparklabs forums.
I never actually received a "banned" notice and my account is still active, but my posts never appear anymore, whereas I had no trouble posting before. Tried to contact the developer but the contact page doesn't work right. So I created a 2nd account and tried to post my question there, but it never showed up either - evidently the dev. is as thin-skinned as Trump (or should I say Drumpf. Google it!).

After you post you get this message, "This message has been submitted successfully, but it will need to be approved by a moderator before it is publicly viewable. You will be notified when your post has been approved." Obviously mine are no longer being approved.

Because of the critical security leaks that were never fixed, as well as other missing features, and the dev. being a vindictive A-HOLE (had no qualms taking my money for his buggy app, though!), I'm giving it the lowest possible rating. There's no way it deserves the 5-star ratings it received with the problems it has!
With the existing leaks it's too easy to receive a warning from an ISP.
(2)
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4.5
TCalhau
17 February 2016
Version: 1.5.11
The new version of Viscosity 1.6 has just been released! =D
(3)
3
Psychiatry
30 January 2016
Version: 1.5.11
I started on Tunnelblick. Then I started using Viscosity. I LOVE VISCOSITY. I love how Viscosity makes it so easy to connect to my VPN. Viscosity is excellent software.

However, I have since abandoned Viscosity and Tunnelblick because of one SERIOUS SECURITY AND FATAL FLAW that leaves you completely exposed and unprotected.

The problem is that if your ISP changes your IP address - and they do periodically unless you pay more for a fixed IP address - or if your VPN server goes down, then both Viscosity and Tunnelblick lose their connection to your VPN.

After they have lost their connection to your VPN, Viscosity and Tunnelblick immediately expose your IP address to the wild. Any internet activity your apps are doing do loses its VPN encryption and protection. Anyone can now monitor your activity, obtain information you are sending and know your IP address.

For example, if you set Mail to send email at a certain time, yet the VPN connection is lost, your email is now sent unencrypted by Viscosity and Tunnelblick. This is horrific.

This security flaw is completely fatal and can be disastrous.

This means you cannot leave your computer actively using the VPN while you go somewhere else or sleep. You are limited to using the VPN only while at the computer. If you are in a hostile country, where your internet activity is being monitored, your privacy is completely lost and your internet activity is completely exposed along with your IP address if the VPN server connection is lost by Viscosity and Tunnelblick.

This security flaw can be partially mitigated by writing an AppleScript that will automatically quit specific apps you are using when the VPN connection is lost. But you have to manually install it with every server connection - a pain. And you have to continually update it with the apps you use with internet connections. It isn't enough if you have other apps active which you did not add to your script which can expose your IP address by interacting with the internet. Some apps may refuse to quit if they are active. And it still leaves you exposed from the time the VPN connection is lost and the app is quit.

I now use my own VPN provider's Custom VPN Client. It protects against disconnect exposure by performing what they call a NETWORK LOCK.

A NETWORK LOCK means ALL ROUTER AND INTERNET ACTIVITY IS SENT ENCRYPTED AND ONLY TO THE VPN'S IP ADDRESS, NOWHERE ELSE. AND IT STAYS ENCRYPTED EVEN IF THE VPN CONNECTION IS LOST. This includes all activity within your own local network. This means every app and background app's activity is encrypted. You don't have to worry about background apps exposing you. You will not be able to connect even to your local computers and printers unless you specify their IP addresses as OK to connect to.

With a NETWORK LOCK, even if the VPN connection is lost, all router and internet activity REMAINS ENCRYPTED and is still sent to the VPN's IP ADDRESS - nowhere else. Since the VPN's server cannot accept that data, it remains encrypted and becomes lost.

Your network and internet activity remains encrypted and protected at all times. No one can snoop and find what information your are sending or what website you connect to. Your privacy remains protected even if your VPN connection is lost.

Since Viscosity and Tunnelblick do not provide something like a NETWORK LOCK, they don't perform the primary reason for using a VPN - protecting your privacy. And this can be disastrous. Unfortunately, as nice and capable they are - particularly to connect to multiple VPN services - the flaw noted above is fatal to their use.

If Viscosity can do a network lock, it is not well documented. I wish the author of Viscosity includes an obvious NETWORK LOCK FUNCTION so I can recommend Viscosity again.
(0)
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User001
20 October 2015
Version: 1.5.11
Good programm with Yosemite, but there is no Internet Traffic after successful connection with Viscosity (openVPN).
(0)
5
TCalhau
10 July 2015
Version: 1.5.7
Version 1.5.8 | Release Date: 2015-07-10 SHA1: 3a2a8c4562e5c0eec8082d74dacf489b1cf4a189 • OpenSSL updated to version 1.0.2d • Various bug fixes and enhancements
(1)
1
lemonb3519
08 July 2015
Version: 1.5.7
Developer does not respond to support requests sent by email through their website. Multiple requests and all have been ignored over the last 5 days.
(0)
Show comments (3)
5
iMiNiMaL
20 April 2015
Version: 1.5.6
I'm testing and I'm loving this app! It will certainly be my next purchase!
(3)
TCalhau
31 March 2015
Version: 1.5.5
Updated :-)
(2)
4.5
Mcr
23 January 2015
Version: 1.5.3
Purchased Windows and Mac licenses about 2 months ago, after using the trial. Using it to connect to Private Internet Access VPN service. Viscosity has been more reliable than PIA's own provided client software on both platforms. Connects/Disconnects faster, first try, rock solid, no drops. The ability to tweak the parameters after importing a saved configuration is very helpful. I love the PIA service, but its client software was always temperamental; now with Viscosity, best of both worlds. Viscosity supports AppleScript. Using AppleScript, I can create app shortcuts to auto launch different connections depending on what I what. The additional flexibility in my opinion makes it worthwhile over Tunnelblick; I mean really, at only $9 it is a great value. I took off 1/2 a star because it doesn't support cross platform licensing yet (buy one license for both Windows and Mac), but that is coming they say.
(4)
4.5
TCalhau
07 October 2014
Version: 1.5
I'm loving this app! It's been my default VPN application! Works smooth and without mistakes, besides, it supports the OpenVPN Protocol which is the only VPN protocol that I trust! Highly recommended!
(6)
iBelieve
31 August 2014
Version: 1.4.10
I would like to find out if anything has been done about SUID helper vulnerabilities leaving root an open playground for hackers? Concerns mostly tunnelblick but also viscosity. Nothing is mentioned about this and I found no solutions on the internet. This is very need to know info before I chip out my credit card and make my purchase.
(0)
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iTruth
18 June 2014
Version: 1.4.10
Great software but not working under Mac OS X 10.10 Yosemite DP2. I'm sure this will be fixed soon.
(1)
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4
Raven-
14 June 2014
Version: 1.4.10
Great app. does all what it must do! Easy to install, easy to work with it. Very nice layout. Very helpful people at the forum, fast answers back... I love this little VPN app. Super!!!!
(3)
MichaelHaeusler
05 June 2014
Version: 1.4.10
Version 1.4.10: still doesn't work on 10.6.8. VPN connection can be established, but most websites don't load.
(0)
2.5
MichaelHaeusler
05 June 2014
Version: 1.4.9
This is just a remark concerning version 1.4.9. I'm on 10.6.8, and the 1.4.9 update doesn't work. I can connect to my VPN provider, but traffic isn't routed through, i.e. websites don't load etc. So there seems to be a serious bug in 10.4.9. After going back to 1.4.8, which you can still download from the dev's website, everything is fine again.
(0)
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5
Phantasm
04 June 2014
Version: 1.4.9
Have been using daily for over a year now and I cannot recall every having a crash. I had had no prior experience with a VPN before but had no trouble importing my connection and getting things up and running in a just few minutes. Worth every penny of the $9 price tag.
(4)
5
anonymous-bandicoot-3081
15 April 2014
Version: 1.4.8
I was looking for an alternative instead of OpenVPN because of some issues. I found a slim and very fast alternative for using "Private Internet Access".
(3)
5
anonymous-bandicoot-3081
15 April 2014
Version: 1.4.8
I was looking for an alternative instead of OpenVPN because of some issues. I found a slim and very fast alternative for using "Private Internet Access".
(2)
Mcr
10 April 2014
Version: 1.4.8
Open Question to anyone: I subscribe to Private Internet Access, a hosted server service with VPN access. (BTW, highly recommended, servers are rock solid, have maintained unbroken connections for DAYS at a time). PIA provides users with their own Win and Mac clients, and I don't have any issues with them, they work as advertised. Is there any advantage to using Viscosity versus the clients provided by PIA?
(0)
FalstaffA
20 December 2013
Version: 1.4.7
@MacUpdate: The link you've posted for downloading Viscosity 1.4.7, which is dated Dec. 18, 2013, is a dead one. Please correct at your earliest convenience. Thanks.
(0)
5
PRjohnson
05 November 2013
Version: 1.4.6
Nothing else comes close to the sheer perfection of Viscosity's one-click OpenVPN connections. Beautiful Mac-like interface with much attention to detail during setup, then immediately gets out of your way via simple on/off menu bar icon.
(2)
5
iTruth
28 September 2013
Version: 1.4.5
There is simply no better way to enjoy OpenVPN on a Mac.
(2)
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5
Barry5p
05 July 2013
Version: 1.4.4
This is a great app for openVPN. It is reliable and easy to use. I love it.
(2)
3.5
paulsrandall
04 July 2013
Version: 1.4.4
I do not how this gets rated so highly. I have to re-enter all of my registration information every time I reboot my computer. That is hardly perfect, even though everything is done quite well.
(0)
Show comment (1)
5
PRjohnson
09 January 2013
Version: 1.4.2
Amazingly Mac-like and simple to use. Been using Viscosity for years and is my trusted VPN app to use for my OpenVPN and other secure connections. Manages several profiles at once while maintaining a clearly laid-out set of master preferences for the app. Configuring your VPN connections is as simple as opening a VPN configuration file typically provided by any of the half-dozen leading VPN providers out there. Developers were smart to make Viscosity as powerful as any networking expert would want while at the same time providing an uncomplicated configuration interface that clearly marks the most commonly-used options and their functionality in places that are to find—and then get out of your way. Viscosity is great for any level of skill. If you are looking for nothing more than an ON/OFF VPN switch, look no further. And, as others have also mentioned, you absolutely cannot beat the $9 price tag for such a wonderful app.
(2)
5
Unit-22
07 July 2012
Version: 1.3.5
I’ve tried quite a few VPN clients over time, this is simply the best one and most Mac-like. It runs constantly on my machine for almost a year now, never crashed or lost the connectivity unexpectedly. If you seriously gonna need a VPN client more than once or twice a year, Viscosity is well worth the $9.
(4)
5
Pirx
17 December 2011
Version: 1.3.5
Viscosity bundled with 12vpn is support-wonderland. Indispensable to get you through the Great Firewall(s) of China in order to reach freedom from oppression and censorship. Worth every penny.
(4)
1
Macnerd1984
28 November 2011
Version: 1.3.5
Well, I figured that after using TunnelBlick for ages I might give this a go. I like TB but it can be flaky on some occasions and the annoying window that pops up notifying you of the open VPN bug is a pain. Unfortunately Viscosity can't even manage a connection - I've tried 3 different servers. Trying the same connections with TB works first time. Additionally, TB has a handy window that pops up during the connection process - It helps you know where to start looking for a failed connection (password etc.); Viscosity doesn't appear to have this. Looks thorough in terms of configuration and the importing of saved servers from TB was handy, but ultimately all the bells and whistles under the sun are no use if it won't actually connect... It could be that I need to dig much deeper within Viscosity to find what is needed to connect, but in that case maybe it isn't really for average bods like me who just want something that you can set up and use quickly.
(0)
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5
gryphonent
02 August 2011
Version: 1.3.4
Best VPN out there! Never had a problem, great support, reliable, fast.
(3)
5
Neil-M
10 June 2011
Version: 1.3.1
Right, first things first. I have used a lot of VPN boxes over the years mainly IPsec (and Netgear's) implementation, there have always been little niggles. IPSecuritas has been the only saving grace. Synology just upgraded their firmware to 3.1-1742 and it brings Airplay, but Also VPN support (either PPTP or OpenVPN). I think that OpenVPN. Viscosity is a really elegant, solid VPN client, made a profile on the VPN Server, exported it, imported into Viscosity...connection. A good solid connection. First time. 1 simple thing it does is; push all traffic through the tunnel - Netgear does not. That is worth the $9 alone. Very impressed. Viscosity is the kind of utility that looks like it belongs on the mac.
(3)
5
Doc-Renaud
29 May 2011
Version: 1.3
I can't believe it's already for two years I'm using Viscosity. Never had a problem, not a single crash, always here and working. Perfect!
(4)
Ronl
05 April 2011
Version: 1.2.3
I am only a potential Viscosity user, but from the excellent responses (and great detail) that I have received regarding my questions... I am seriously considering purchasing this VPN client even though my VPN service provides a proprietary client. If you don't already have a VPN client... this would __definitely__ seem worth giving a try.
(6)
5
Jacek-Noga
21 March 2011
Version: 1.2.3
Absolutely brilliant, looks very good and works as expected and $9 is like for free :)
(4)
xati-ba
21 February 2011
Version: 1.2.3
Can someone tell me if this is better than Tor?
(0)
5
Nontroppo
02 November 2009
Version: 1.0.7
After struggling to get Tunnelblick work on 10.6, I gave Viscosity a try, and boy am I happy I did. It does what it needs and no more; a sleek and functional UI, I like the details pane showing throughput and its configurability. Checking the forums, the developer seems very friendly and fast/consistent answering queries and problems. This is definitely worth the money.
(5)
Fishscale
26 September 2009
Version: 1.0.6
Everybody's tun tap working with 10.6? I get it to "stick" for 1 minute max... It says connected to tun0 but after a couple minutes it no longer works... well it says' it does "connected" but no net stat shows no input or output, websites can't connect etc... Would love if anyone has a clue how I can fix this or if you have ran into the same problem. I don't think it is with viscosity but 10.6?.?.? Thanks.
(0)
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Airstation
11 August 2009
Version: 1.0.5
Version 1.0.5 works flawlessly with the latest beta of Snow Leopard 10.6....
(2)
5
Doc-Renaud
24 June 2009
Version: 1.0.5
As I had to set a private VPN connection for the first time, I choose Viscosity based on other people review here at MacUpdate about different app of this kind. So I can't really compare Viscosity with the competition. What I can say, is that it was a matter of maybe just one or two minutes to complete the setup and preferences, and that everything is running smoothly ever since. When the free trial was over, I gladly bought a license at this very reasonable price.
(3)
5
Fishscale
23 April 2009
Version: 1.0.4
ARTOORO, your totally correct. I love this app in all ways. Beautiful, works, and responsive dev. I can appreciate it more after using all the other "crap" openvpn gui clients.
(3)
5
Artooro
01 January 2009
Version: 1.0.1
Viscosity is better than any openvpn client you'll find for any platform. Windows, Linux, and Mac OS X. I absolutely love Viscosity and use it every day. For the price you can't go wrong. Viscosity makes OpenVPN fun to use (especially if you've used other clients in the past)
(4)
5
Greyman
02 July 2008
Version: 0.4
When I saw this I jumped at it from all the issues I have with tunnelblick under leopard. The developer has been Johnny on the spot with the little issues I noticed in the beginning. With this current version all aspects of this application appear to be working properly.
(4)
Otto-m
02 July 2008
Version: 0.3
Importing configuration from Tunnelblick was a breeze, and Viscosity has been running for three days without a hitch. Thanks to the developer for the work. It's great for OpenVPN users after all the trouble with Tunnelblick in Leopard.
(3)
Greyman
29 June 2008
Version: 0.3
Fired it up and it imported my Tunnelblick connections without issue. Really like the details screen showing you the connection information and the growl integration. Only issue at the moment is when I go to edit one of my imported entries I get the following error: An unexpected error occurred: (UnboundLocalError: local variable 'serverAddr' referenced before assignment) Hope this application remains free.
(0)
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