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Business Insider / Mike Nudelman

Yahoo's $1.1 billion acquisition of Tumblr really put New York tech on the map this year.

But over the past few years, New York City has become a tech hotspot. 

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In fact, tech is the city's second-largest job sector

New York has become home to some of the tech industry's most promising companies, including Etsy, Rap Genius, MakerBot, Kickstarter, Tumblr, and Infor.

All in all, it's been a great year for New York Tech. So we created the Silicon Alley 100 to celebrate people who did the coolest things in 2013 .

But what does it mean to have done something cool?

We prioritized entrepreneurs over investors, simply because it's a lot harder to start a company than to fund one. We particularly prioritized startups with amazing exits and people who had big, game-changing roles at tech companies.

Next, we valued companies that really blew up over the last year (the Upworthys and the Vines), followed by entrepreneurs who launched cool, new companies. Then we dove deeper into the tech ecosystem and recognized the money behind the startups — the angel and early-stage investors.

Thanks to all of the people who make New York an amazing place to launch a startup.

Scroll through this year's Silicon Alley 100 >>

Disclosure

A number of Business Insider's investors appear on this list: RRE, Ken Lerer, Dwight Merriman.

Many companies on the list share investors with Business Insider 

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