3. Navteq

What it does: Provider of Geographic Information Systems data and GPS data and software services.
IPO Date: August 9, 2004
Money raised: $880 million

Started in 1985 as Karlin & Collins, Inc., a company that developed a computer kiosk that could print door-to-door directions at car rental locations, the company was eventually purchased by Philips Electronics in the '90s and attempted to make a car-based GPS mapping device which never came to be. After many failed attempts, Philips was finally able to take the company public, raising nearly $1 billion and allowing it to expand its reach. It opened offices in the Netherlands, South Korea, and Japan and became one of the biggest names in personal and professional GPS systems. It was so good, Nokia decided to buy it in 2007 for $8.1 billion.