We're oh-so-CLOSER! 
The App Exchange app is heading to QA shortly and will be available soon;   we've posted a description of what we're building below. 
While you're waiting, take a look at our current applications available now to 2600Hz customers.

What is the App Exchange?

The 2600Hz App Exchange will host a community of third-party developers who want to build and publish applications on the KAZOO platform.

We are leveraging the power of our APIs and giving developers the chance to build applications to fill any niche in the telecom marketplace that they desire, all while providing a space for developers to monetize their work and share solutions they’ve crafted.