Sleipnir is a tabbed web browser developed by Fenrir Inc. The 
browser is known for its high level of user customization and is one 
of the few browsers to still support Windows 98. It supports HTML5.

Sleipnir for Windows 98 - 7
Sleipnir for Mac
Sleipnir for Android
Sleipnir for iPhone/iPad
Sleipnir for Windows Phone