Sleipnir Web Browser: What do you need to know?

Explore a lesser known alternative to your current browser

by Milan Stanojevic
Milan Stanojevic
Milan Stanojevic
Windows & Software Expert
Milan has been enthusiastic about technology ever since his childhood days, and this led him to take interest in all PC-related technologies. He's a PC enthusiast and he... read more
Fact checked by Alex Serban
Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
Affiliate Disclosure
  • There are a lot of great browser choices out there and some of them remain unknown to many.
  • One of these browsers is Sleipnir, and in today’s article, we’re going to tell you more about it.
  • Learn who designed it, how it works, and if it is a worthy contender to some of the popular ones.
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When it comes to web browsers, the most popular choices are the ones that are intended for the global market.

However, there are many less popular browsers, such as Sleipnir, and speaking of which, in today’s article we’re going to see what Sleipnir can do.

Just keep on reading the lines below.

Is Sleipnir a good browser?

You might not actually know this, but Sleipnir has proven to be a stable and fast web browser that comes with a lot of innovative functions and various customization possibilities.

And, the extra security features, paired with smartphone and web app linking are functionalities that make it a viable alternative to its more popular competitors put there.

It goes without saying that it won’t compete closely with the likes of Opera, Chrome, Edge, or Safari, but it still remains a worthwhile choice.

Who created Sleipnir browser?

You want a little background information on this software, and that is only natural. You see, Sleipnir was originally developed by Yasuyuki Kashiwagi.

And, as an interesting tidbit, the PC containing Sleipnir’s source code was stolen back in November 2004, and many thought that would be the end.

However, in 2005, Kashiwagi established Fenrir & Co. to start the development of a new version of the Sleipnir browser.

What is the Sleipnir browser and should I use it?

1. What is the Sleipnir browser?

sleipnir browser page

Sleipnir browser is developed by a Japanese company, Fenrir Inc, and it was introduced way back in 2004.

Just like many web browsers at the time, Sleipnir had the ability to change the layout engine as needed.  The browser had support for two engines, Trident and Gecko.

However, with the added support for the WebKit engine, the support for Gecko was dropped. As for other features, the browser has support for tab grouping as well as mouse gestures.

The newer versions of the browser also offer better text rendering, similar to the one on Mac OS. Speaking of which, the browser fully supports Retina displays.

The browser is fast, and it even has support for Chrome extensions. As for availability, you can get this browser on all major desktop and mobile platforms.

You can download the browser from the official website, but the website is in Japanese, so you might have a bit of trouble using it if you don’t speak Japanese.

Download Sleipnir Browser

2. Are there any Sleipnir alternatives?

install Opera

Although Sleipnir offers unique features, it still lacks some features in the safety department, and this is why Opera might be a better choice.

Opera has tracking protection that will speed up webpage loading by blocking tracking scripts and cookies. The browser also has crypto protection, which will surely come in handy.

Additional features include a built-in ad blocker and a free VPN with unlimited bandwidth for extra privacy.

The browser also has instant messenger and Instagram integration, a built-in screenshot tool, not to mention the ability to organize tabs into workspaces.

On top of everything, it is based on the Chromium engine, it supports Chrome extensions, and it’s available on all desktop and mobile platforms, so feel free to try it out.


Looking for an alternative to the Sleipnir browser? If you haven’t already, don’t hesitate to install Opera!

Sleipnir is a solid browser with some unique features, but if you want a secure and reliable browser, you should stick with a browser such as Opera.

However, if you are interested in a Sleipnir browser download, you will find all the resources you need in this article.

And yes, there are also Sleipnir browser download links for Mac, just in case you don’t want to use Microsoft’s operating systems.

Let us know you final choice in the comments section below.

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