Sleipnir 4 for Mac (4.1.0) Web browser released. Find the pages you want to open from typing just 4 characters!

category : for Mac, Sleipnir 4

Sleipnir 4 for Mac

This is to let you know that version 4.1 of Sleipnir 4 for Mac, the ultimate in advancement of the Web browser not needing an address bar has been released!


The new “Portal Field” in the latest version is the cutting-edge search function for Sleipnir 4 for Mac that can find the sites you want to open from typing just 4 characters.


The narrowed-down page results are organized with a unique design by site, achieving a compact, easy to view suggestions list that surpasses the previous address bar.

We think that the original way where suggestions of pages from the same site are place at the top after opening is not pretty at all. From now on, please try instantly opening the site you were thinking of in the shortest possible time with “Portal Field”.

Sleipnir 4 for Mac

So, let me get down to introducing to you a little bit about Portal Field, surpassing the address bar.

Portal Field finds from typing just 4 characters

When you input facebook to search for and open it, you probably expect to see something like or, or maybe just

Web browsers until now displayed suggestions from the same site scattered all over the place.

However, the designer at Sleipnir 4 for Mac thought that people don’t want to see any those, but simply Facebook. This brought about Portal Field to instantly find pages you want to open from the compact, easy to view suggestions list after typing in the bare minimum.

Sorted by site makes finding easy

For the suggestions list displayed from the previous address bar, many pages from the same domain would be listed making it necessary to type in more and narrow it down.

Portal Field in Sleipnir binds tabs by site depending on the domain used to display a suggestions list with a refreshingly efficient feeling.

The unorganized branched-out pages have been scrapped so you can jump directly to the site you are thinking of.

Sleipnir 4 for Mac

Branched-out unorganized sites have been scrapped so you can directly jump to the site you are thinking of.
Even the suggestions list has been beautifully designed in Sleipnir 4 for Mac.

Compact and at a glance to find what you want

Binding suggestions by site also leads to displaying more important suggestions in a more compact list.

Portal Field narrows down suggestions to just 8 so that you can decide with one glance. Even so, similar pages are bound together so that a more than sufficient number of sites can be found compared with general Web browsers.


You can even expand pages in the same site with the Tab key.

The sites you were thinking of pop-out as if magic

Portal Field usually sorts the list of suggestions with the top page at the top. However, bookmarked pages are prioritized, being displayed above the top page. 

So, if you bookmark your favorite category of a shopping site, the log-in screen of your favorite online services, or whatever you often use online, you can quickly and accurately find them.


Bookmarks become the site listed at the top.

Open tabs don’t increase if already open

When a suggestion is already open in the tab bar, you are moved to that tab in order to not increase unnecessary tabs.

The vicious cycle in Web browsers until now where after repeatedly searching, tabs of the same pages are shown making it necessary to search again can be completely avoided.


Bookmarks and open tabs are indicated by icons to the right of suggestions.

Take better control of inputting searches and addresses

Portal Field is also a place for searching and directly inputting addresses(URLs). Not only Web searches, but also sites such as Wikipedia and Amazon can be freely added and directly searched after just 2 steps.

Furthermore, when addresses are inputted, Sleipnir 4 for Mac automatically distinguishes them as addresses.


Once added, you can directly search them from Portal Field.


When addresses are inputted they are automatically opened as addresses. With Portal Field you can type in addresses and paste without any restraints.

Portal Field uses history and bookmarks when displaying the suggestions list. When trying it out, please use the browser data you have always been using. In this update, in addition to Chrome and Safari, you can also import data from Firefox. In addition to importing when you first start up the application, you can also import when ever you want to from File>Import from Other Browser…

Portal Field has been beautifully and logically designed to open the sites you are thinking of in the shortest possible time. 

The addition of Portal Field has polished-up the cutting-edge design in Sleipnir 4 for Mac that surpasses other Web browsers to become an ever unwavering product.

Sleipnir 4 for Mac is the ultimate in advancement of the Web browser with the most evolved design.

For new users

Sleipnir 4 for Mac can be download from this page. The installation guide will be displayed straight away after starting the download.

When installing, your bookmarks, history and more can be imported from the browser you previously used so that you can start browsing just like usual when you start using Sleipnir 4.

For previous users

A vast range of features have been added to Sleipnir 3 from the initial release up until v3.9.5. The features that you wanted may well have been added since you tried Sleipnir 3 out. If you are reading this page then this is a good opportunity to find out. Please try out the latest installment, Sleipnir 4!

For updating

Users who have used Sleipnir 3 Black Edition until now can automatically update to Sleipnir 4 just like usual. All your data will be transferred too. We hope you enjoy using Sleipnir 4 too!

About the Mac App Store version

The Mac App Store release of Sleipnir 4 is still under preparations.

Furthermore, due to restrictions in the Mac App Store, there are differences with functions and release speed between the 2 versions.

Sleipnir 4 (Black Edition) released on our Web site is also free. Updating is also automatic. We are always trying to provide the best browsing experience through Sleipnir, so please try out Black Edition!

Please check here for the differences between the Mac App Store version and Black Edition.

So, please try out the modern, beautiful Web browser with advanced design and functions, Sleipnir 4

Download Black Edition from the product page!!!

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