Google is the most popular search engine in the world. It's so synonymous with search that we even use the phrase â€śGoogle itâ€ť, rather than â€śsearch for itâ€ť. But Google isn't the only important search engine in the world. In some countries, there are other search engines which are challenging Google's dominance, and some have even succeeded at toppling Google off the top spot. This video looks at six of these alternative search engines.