Sleipnir
Sleipnir is a Japanese tabbed web browser known for its gesture-based navigation and highly customizable interface. Originally popular in Japan as one of the leading domestic browsers, it emphasizes smooth tab switching with intuitive gestures and a polished UI design. The Mac version (version 4.x) was targeted at users who preferred alternative browsers with rich customization options and gesture controls. While the developer Fenrir Inc. continues to maintain Sleipnir on mobile platforms (iOS and Android) and Windows, the Mac version appears to have been largely dormant.
Suggested Replacements
1 suggestionSleipnir for Mac appears to be abandoned. The latest known version for macOS is 4.5.1, and there is no evidence of a native Apple Silicon version or active development for Mac. Fenrir Inc. has shifted focus to Sleipnir 6 (Windows only) and mobile versions. For Mac users seeking a replacement, consider Safari (native, built-in), Chrome (native, widely supported), Firefox (native, privacy-focused), or Vivaldi (native, highly customizable with similar gesture support). Vivaldi is particularly recommended if you valued Sleipnir's customization and gesture features—it offers extensive UI customization and advanced gesture controls while maintaining active macOS support including Apple Silicon.
Native version · Reported by in the community.
Sighting data is community-sourced — version availability and pricing should be verified with the developer.
Suggested Replacements
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