Sallie Mae's former headquarters in Reston, Va.
Sallie Mae's former headquarters in Reston, Va.

A social enterprise accelerator, a city-backed venture fund and a network of free computer labs to combat the digital divide.

Several of the buzziest, most exciting projects to emerge from Philadelphia’s tech scene in the last five years have been public-private partnerships.

Through them, the Nutter administration has declared its dedication to growing the Philadelphia tech scene, with the help of local venture capital firms, accelerators and universities. It’s also tried to take cues from the startup world.

When Mayor Michael Nutter opened his office of New Urban Mechanics, an incubator for public-private partnerships, he told directors Story Bellows and Jeff Friedman (now with Microsoft) that if they didn’t fail, they weren’t trying hard enough, Bellows has said.

We’ll be talking about how cities along the East Coast are crafting their public-private partnerships at Rise, our civic innovation conference held from Oct. 22-24.

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Here’s a look at three Philly public-private partnerships and how they’re faring: