2. Tel Aviv, Israel
babylon mac
Who launched here?: Babylon, Mirabilis
Average entrepreneur age: 36.2
Average work hours per day: 9.4

Tel Aviv is the only non-U.S. ecosystem in the top six, but boasts the highest density of tech startups in the world. Startups in Tel Aviv rely more heavily on advertising for revenue than startups in Silicon Valley. They also tend to focus on smaller, tech-driven markets instead of "big market winners."

  @FortuneMagazine - Last updated November 27 2012 10:17 AM ET
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