FENRIR
Product brand
UnclaimedJapanese streetwear brand known for dark aesthetics and unique graphics.
Last updated August 31, 2026
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Overview
FENRIR is a Japanese streetwear brand popular among young consumers for its dark aesthetics and unique graphic designs. Products include T-shirts, hoodies, and outerwear.
History
Fenrir Inc was established in June 2005 in Japan after the source code for the original Sleipnir web browser was stolen. The company’s formation enabled the Sleipnir project to continue under a dedicated software business rather than remaining solely associated with its earlier development history. Sleipnir 2 was announced in October 2005, representing one of the first significant stages in the post-establishment development of the browser. Fenrir’s central product became Sleipnir, a browser offered across several operating systems and device types. Although its early identity was strongly associated with desktop browsing, the company subsequently pursued a broader platform strategy. Sleipnir Mobile for Android was released on September 15, 2011. Sleipnir 3 for Mac followed on November 2, 2011, and Sleipnir 3 for Windows was released on November 16, 2011. Together, these releases show the company’s effort to make the browser available across desktop and mobile environments during a period of rapid expansion in smartphone and tablet usage. The company’s activities extended beyond the browser itself. Fenrir Pass was presented as a cloud service for synchronizing bookmarks and related services. FenrirFS addressed file management, while SnapCrab provided screen-capture functionality. PictBear offered painting and image-editing capabilities, and the company also developed Inkiness, a drawing application for iOS, and FlickAddress, an iOS address-book application. These products placed Fenrir in the wider market for consumer productivity, organization, and creative utilities. Fenrir also developed software and collaborations for the Japanese market. Grani was a collaboration web browser whose presentation could be customized through designs connected with companies, entertainment properties, characters, sports organizations, and other brands. The documented design collaborations included properties such as Shonen Jump-related titles, Pingu, Thomas, Cerezo Osaka, Urban Research, Cybozu, and Infoseek Rakuten. Sleipnirstart served as a start page for accessing favorite websites and searching the web, with links to services including Yahoo, Rakuten, GyaO, and Hatena. The available source material provides a product and release history but does not document Fenrir Inc’s founder, detailed corporate ownership, financial results, executive roster, or current operating condition. It also does not provide enough evidence to determine the current availability or active development status of every product listed. Fenrir’s documented historical profile is therefore that of an Osaka-based Japanese software company built around Sleipnir and expanded through a portfolio of browser-related and personal-computing applications.
- 2011
Sleipnir Mobile for Android released
[1]Fenrir released its Sleipnir Mobile browser for Android on September 15, 2011.
- 2011
Sleipnir 3 for Mac released
[1]Sleipnir 3 for Mac was released on November 2, 2011.
- 2011
Sleipnir 3 for Windows released
[1]Sleipnir 3 for Windows was released on November 16, 2011.
- 2005
Fenrir Inc established
[1]Fenrir Inc was established in June 2005 after the source code of the original Sleipnir browser was stolen.
- 2005
Sleipnir 2 announced
[1]The company announced Sleipnir 2 in October 2005.
Products and positioning
A Japanese software developer centered on cross-platform web browsing and practical personal-computing utilities, with additional products and collaborations tailored to Japanese users.
Web browser
Sleipnir
Fenrir’s principal browser family, documented for Windows, Mac, Android, iPhone and iPad, and historically Windows Phone. The line includes Sleipnir 2, Sleipnir 3 for Mac and Windows, and Sleipnir Mobile for Android.
Cloud synchronization service
Fenrir Pass
A cloud service intended to synchronize bookmarks and related services across a user’s devices or software environments.
File-management software
FenrirFS
A file-management application in Fenrir’s utility portfolio, extending the company’s activities from web browsing into organization and management of personal computer files.
Screen-capture software
SnapCrab
A screen-capture application designed to let users create captures from their computer screens as part of Fenrir’s practical desktop utility offerings.
Painting and image-editing software
PictBear
A painting and image-editing application that broadened Fenrir’s software portfolio into lightweight creative and graphics work.
iOS drawing application
Inkiness
A drawing application for iOS, representing Fenrir’s development of mobile creative software alongside its mobile browser products.
iOS address-book application
FlickAddress
An address-book application for iOS and part of Fenrir’s broader set of mobile personal-information tools.
Collaborative themed web browser
Grani
A browser offered with designs associated with companies, entertainment properties, characters, sports organizations, and other Japanese-market partners. Documented themes included Shonen Jump-related titles, Pingu, Thomas, Cerezo Osaka, Urban Research, Cybozu, and Infoseek Rakuten.
Web start page
Sleipnirstart
A start page intended to provide access to favorite websites and search services, including links associated with Yahoo, Rakuten, GyaO, and Hatena.
Brand decisions
2011
Expand Sleipnir into mobile and additional desktop platformsStrategyBackground
Fenrir’s browser had historically been associated with desktop software, while the documented 2011 releases indicate an effort to cover Android and Mac as well as Windows.
Action taken
The company released Sleipnir Mobile for Android in September 2011, Sleipnir 3 for Mac in November, and Sleipnir 3 for Windows later that month.
Aftermath
The releases established a documented cross-platform expansion for the Sleipnir browser family. The available material does not provide performance or financial results.
Sources1 sources
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