Google

Google started out as a simple search engine and evolved into a massive corporation. They are the Microsoft of the internet world, in my opinion, and they have a hand in everything from searching the web to mobile phones. Their main revenue is probably from software development and their Android phones. They released their phone OS a few years ago and it gave way to the now popular Droid mobile phone. Google is the most popular search engine on the web by a wide margin. They make money from their "Adsense" program as well. They allow people to place "Google Ads" on their sites that automatically use ads relevant to the website they're placed on. Its interesting how a simple idea for a website like Google can turn into an international corporation with a wide control of the internet. Google also recently bought youtube.