Valkyrie and knotted into a ponytail, sometimes bearing drinking horns, have been discovered throughout Scandinavia. These figures are commonly considered to represent valkyries or dísir. According to Mindy MacLeod and Bernard Mees, the amulets appear in Viking Age graves, and were presumably placed there because "they were thought to have protective powers". The Tjängvide image stone from the Baltic island of Gotland, Sweden features a rider on an eight-legged horse, which may be Odin's eight-legged horse Sleipnir, being greeted by a female, which may be a valkyrie at Valhalla. The 11th century runestone U 1163 features a carving of a female
Sleipnir (web browser) main browser window.” Despite this, version 4 was criticized for its poor performance, compared to other browsers using WebKit. Later versions of Sleipnir received positive reviews from "Softpedia", due to the browsers customizability, features and the availability of mobile versions. “Sleipnir proves to be a stable and fast web browser that comes with innovative functions and various customization possibilities. The extra security features, together with smartphone and web apps linking are features that make it a viable alternative to its more popular competitors.” In 2012 multiple performance tests by "Tom's Hardware", the Android version of Sleipnir has been placed on