MIT review has posted their list of the 50 Disruptive Companies 2013. The list covers companies in 8 sectors and groups them into five categories as shown in the list below.

• Biomedicine
• Computing & Communications
• Energy & Materials
• Internet & Digital Media
• Transportation

New companies this year include Amazon, Corning, Dow Chemical, and Mozilla to name a few. Companies retained from last year include Google, IBM, and SpaceX again to name a few.