Sleipnir

Sleipnir

Sleipnir is a web browser developed by Fenrir Inc. It is known for its customization features, tab management tools, and unique rendering engine. Sleipnir aims to provide a fast and flexible browsing experience on Windows platforms.
Sleipnir image
tab-management customization fast flexible windows

Sleipnir: Fast Customizable Web Browser

A powerful web browser with customization features, tab management tools, and a unique rendering engine, designed for fast and flexible browsing on Windows platforms.

What is Sleipnir?

Sleipnir is a web browser for Windows developed by the Japanese software company Fenrir Inc. First released in 2006, Sleipnir has gained popularity in Japan and other countries for its extensive customization options, tab management tools, and unique browsing engine.

Some key features of Sleipnir include:

  • Customizable interface - Users can fully customize the look and feel of Sleipnir with themes, skins, icons, fonts, and even mouse cursors.
  • Tab management - Tools are provided to organize many open tabs, such as tab grouping, searching through tabs, and saving/loading tab sessions.
  • Blink rendering engine - Sleipnir utilizes the open-source Blink engine for fast page loading and standards compliance.
  • Extensibility - An add-on framework allows users to expand Sleipnir's functionality with plugins and scripts.
  • Privacy tools - Features like tracking protection and fingerprint obscuring aim to protect user privacy.
  • Portable mode - Sleipnir can run directly off USB drives without needing installation.

While not as widely used as browsers from major vendors like Google and Microsoft, Sleipnir's focus on customization and its unique feature set have won it a loyal following worldwide.

Sleipnir Features

Features

  1. Tab stacking and tiling
  2. Customizable interface and shortcuts
  3. Built-in ad blocker
  4. Unique rendering engine
  5. Web page translation
  6. Bookmark and password management
  7. Dark mode

Pricing

  • Freemium

Pros

Fast and lightweight

Highly customizable

Good tab management

Blocks ads and trackers

Supports many languages

Cons

Only available on Windows

Limited extension support

May not be compatible with some sites

Lesser known browser


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