EBay and PayPal are rolling out new developer initiatives. At the eBay Developers conference in Chicago June 16, eBay announced Project Echo, which is designed to allow third-party developers to integrate applications directly onto eBay, the world’s largest e-commerce site. Max Mancini, senior director of platform and disruptive innovation at eBay, said the company’s move gives developers unprecedented access to eBay’s community of professional sellers, creating more opportunities for developers to market their tools and giving sellers a wider variety of sales options. EBay has a community of more than 70,000 developers, and more than 12,000 applications currently use the eBay APIs, Mancini said.E