When it comes to search engines, there is no doubt that Google reigns supreme over its competitors, and has done so for over a decade. However, this round of search wars has many speculators expecting a comeback from the likes of Yahoo and Bing.

Google has managed to keep two-thirds of the search market share by its affiliation with various web browsers. But, as of last year, Google was replaced by Yahoo as the default search engine for Firefox.

"Our agreement came up for renewal this year, and we took this as an opportunity to review our competitive strategy and explore our options," Mozilla CEO Chris Beard said on The Mozilla Blog. "In the end, each of the partnership options available to us had strong, improved economic terms reflecting the significant value that Firefox brings to the ecosystem. But one strategy stood out from the rest."

Google has also been in a steady war with Apple, which could threaten a huge portion of their market share if they were to ever lose their Apple contract. Citigroup claims that the search engine company could possibly lose $9 billion in gross revenue if it were to lose its spot on the iPhone.

"This is a long-term game for Bing, and Microsoft is more committed than ever to the search market," Microsoft said in a statement to International Business Times. "It's at the core of everything from Cortana on Windows Phone, to Siri and Spotlight from Apple -- even the multilingual abilities in Facebook and Twitter."

Microsoft and Yahoo continue to make strides in improving the quality of their search engines in their attempts to usurp Google's influence, although the current numbers suggest they still have a long way to go.

As of August, Google stands at 63.8 percent, Microsoft at 20.6 percent, and Yahoo at 12.7 percent market share.