1. Mobile Phone: iPhone vs. Android Phone
2. Store: AppStore vs. Android Market
3. OS: OS X vs. Crom OS
4. Browser: Safari vs. Crom
5. Movie Rental: iTunes vs. YouTube
6. Office Program: iWorks vs. Google Docs
7. Email: MobileMe vs. Gmail

Full Article From: http://www.ebuzz.co.kr/content/buzz_view.html?uid=81807