Nordstrom is leading the charge on uniting online and offline commerce.

Headquarters: Seattle, Washington

Year founded: 1901

Why it's revolutionary: Nordstrom is using real-time data from Pinterest to influence store displays. If items are popular with Nordstrom's 4.5 million Pinterest members, they display them in stores. The company also found a way to profit from showrooming through a partnership with Blue Nile Jewelry. The jewelry company has a showroom kiosk in Nordstrom's bridal department.