In the beginning, it was Macintosh vs. Windows. Then it was Windows against OS/2 against the Mac. Followed by Netscape Navigator head-to-head against Internet Explorer.
The history of technology is replete with these standoffs, as companies and their developers square off against each other to try to capture the most customers, and therefore the most revenue.
Today, the competition at the center of the attention is the mobile device sector. Which phone is better, the iPhone or the Android devices? Some would suggest that the real point of contention is at the operating system level with iOS vs. Android...