BSP:
A Board Support Package (BSP) is an implementation specific support code for a given board that conforms to a specific operating system. It is commonly built with a Bootloader that contains the minimal device support to load the operating system and device drivers for all the devices on the board.

Device Drivers:
In computing, a device driver or software driver is a computer program allowing higher-level computer programs to interact with a hardware device.
A driver typically communicates with the device through the computer bus or communications subsystem to which the hardware is connected. Drivers are hardware-dependent and operating system specific. They usually provide the interrupt handling required for any necessary asynchronous time-dependent hardware interface.

Variscite provides development and consulting services on a variety of operating systems:

• Windows Embedded CE

• Linux Embedded

• Android