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Great apps are what we do.

Viscosity is a first class VPN client that lets you secure your network with ease & style.

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About SparkLabs

SparkLabs is a small independent company that creates powerful software for desktop and mobile. We were founded in early 2008 and we've been working on designing and developing beautiful software ever since.

We strive to bring powerful computing technologies to all users through apps with beautiful intuitive designs with a focus on network security and user privacy. We at SparkLabs take pride in developing software that our users love.

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Recent News

Viscosity For Mac & Windows: Version 1.7.5


Version 1.7.5 of Viscosity has been released for both Mac and Windows! This release includes a number of small improvements and bug fixes, and updates OpenVPN to versions 2.4.4 and 2.3.18. The OpenVPN updates address a potential security issue related to an old data channel key negotiation method, and users are encouraged to update. This update also changes the name of Viscosity's TAP network interfaces on macOS from "tap" (e.g. "tap0") to "vtap". This is designed to prevent clashes... Read Post »

Viscosity For Mac & Windows: Version 1.7.4


Viscosity version 1.7.4 is now available for both Mac and Windows. This update is a maintenance release that includes a number of small bug fixes and improvements. Also included is finalised support for the upcoming macOS 10.13 (High Sierra) release, improved...
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Getting Started Running Your Own VPN Server


Running your own Virtual Private Network (VPN) server is one of the easiest, and indeed recommended, ways to get started using a VPN setup. Whether you want to connect back to your home while on the road, protect yourself while on public Wi-Fi networks, allow...
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Viscosity For Mac & Windows: Version 1.7.3


Version 1.7.3 of Viscosity is now available for both Mac and Windows! Version 1.7.3 was released shortly after 1.7.2, and fixes two small regressions introduced in version 1.7.2. This release includes updates to the latest versions of the OpenVPN 2.3 and 2.4...
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