Jungo Drivers

It depends on the type of PCIe peripherals you are targetting at, if you need a windows driver. You could try to use a device type that is supported by a windows supplied driver, otherwise you need a windows kernel driver. The general method to develop a driver is with Microsoft DDK kit, that is available for shipping cost. Jungo tries to provide a more easy way for "lazy engineers", using a combination of preconfigured kernel drivers and specific user mode driver, but it may may be less performant than a exact fitted kernel driver in some cases.