Gateway, Inc.

Acer outdueled Asus in the third quarter to become the world's No. 1 seller of mini-notebook PCs, according to DisplaySearch and Gartner.

Though Asus essentially created the mini-notebook segment in late 2007, DisplaySearch reports that Acer was able to capture more than 35 percent of the market globally in the third quarter, stripping market share from its main rival. Gartner confirmed that the rivals have swapped market-share slots.