A first class OpenVPN client that lets you secure your network with ease & style.
Publisher’s description
What is Viscosity?
Viscosity by SparkLabs Pty Ltd is proprietary Windows software in the vpn & proxy category.
Installation and requirements
The publisher provides EXE (Inno Setup) installers for 64-bit and ARM64 Windows. The main installer is 17.1 MB. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 1.13.2.1888, released on October 1, 2026. The version history goes back to August 27, 2021: 18 releases, all linked to the official files. That is about 3.5 releases a year. The last update is less than a month old.
Popularity and file types
On Windows it registers 3 file types, including .conf, .ovpn and .visz. Similar programs include OpenVPN, nginx and Tailscale.
Pros / Cons
Pros
- Native ARM64 build for Windows on Arm
- Documented silent install
- Updated in the last two months
Cons
- Proprietary licence: check the terms and price
- Installation needs administrator rights
In short: Viscosity is a vpn & proxy tool for 64-bit and ARM64 PCs. Administrators can deploy it unattended.
Is Viscosity safe to download?
- The file is served by swupdate.sparklabs.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
64640C7AD2EF7B945EBDF12F0E79DD81D080492B774E6D47295EA6B1EAAE4895· Open the VirusTotal report for this hash - The link answered when we last checked it (October 22, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 18 versions ›18 versions over 5 years · about 3.5 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 1.13.2.1888Latest | October 1, 2026 | 17.1 MB | ARM64 EXE (Inno Setup)64-bit EXE (Inno Setup) |
| 1.13.1.1884 | August 7, 2026 | — | 64-bit EXE (Inno Setup)ARM64 EXE (Inno Setup) |
| 1.13.0.1877 | July 7, 2026 | — | ARM64 EXE (Inno Setup)64-bit EXE (Inno Setup) |
| 1.12.1.1857 | February 12, 2026 | — | 64-bit EXE (Inno Setup)ARM64 EXE (Inno Setup) |
| 1.12.0.1855 | February 3, 2026 | — | ARM64 EXE (Inno Setup)64-bit EXE (Inno Setup) |
| 1.11.5.1842 | May 15, 2025 | — | 64-bit EXE (Inno Setup)ARM64 EXE (Inno Setup) |
| 1.11.4.1835 | January 15, 2025 | — | ARM64 EXE (Inno Setup)32-bit EXE (Inno Setup)64-bit EXE (Inno Setup) |
| 1.11.3.1828 | August 27, 2024 | — | 32-bit EXE (Inno Setup)64-bit EXE (Inno Setup)ARM64 EXE (Inno Setup) |
Install from the command line
Silent install ›winget install --id SparkLabs.Viscosity -e"Viscosity Installer 1.13.2.exe" /SP- /VERYSILENT /SUPPRESSMSGBOXES /NORESTARTRelated guide: How to use winget: install and update apps
Also for other systems
brew install --cask viscosityInformation
- Publisher
- SparkLabs Pty Ltd
- Category
- VPN & proxy
- Licence
- Proprietary
- Price
- See the publisher’s site
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, ARM64
- Installer
- EXE (Inno Setup)
- Version
- 1.13.2.1888
- Released
- October 1, 2026
- Added to the catalogue
- August 27, 2021
- Versions listed
- 18
- Updates / year
- 3.5
- Website
- sparklabs.com
- winget ID
- SparkLabs.Viscosity
File types it opens (3)
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to Viscosity
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Frequently asked questions
Is Viscosity free?
Viscosity is proprietary (closed-source) software (licence: Proprietary). Whether it costs money depends on the edition: check the publisher’s site for prices and free tiers.
Is Viscosity safe to download?
The download comes from swupdate.sparklabs.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Viscosity with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Viscosity be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Viscosity run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Where can I download an older version of Viscosity?
The versions page lists all 18 versions with links to their official installer files, back to August 27, 2021.
What are alternatives to Viscosity?
OpenVPN, nginx, Tailscale, Proton VPN and Netbird. The alternatives page compares them.
