Nice list of NYC based start ups and companies, we’d add Adafruit, MAKE (has an offices & lots of staff here) and MakerBot of course

What sets New York apart from the rest of the world?  New York attracts the most creative, ambitious, and hard-working people into one extremely diverse city.  There’s an energy here that can’t be replicated anywhere else in the world.  Mix that with a great nightlife, culture, and a city that never sleeps — you can see why the New York startup movement has been picking up momentum.  I believe that NYC tech startups have a better eye for design, user experience, business models, and creating companies that solve real problems (and not launching more “me-too” companies).  And the icing on the cake?  The companies coming out of NYC right now are just… sexy.  There’s no other way to explain it.