These are a selection of services for the ReactOS kernel. They include

    parallel = parallel port driver
    serial = serial port driver
    mouse = mouse driver
    null = null device driver
    ide = IDE (hard disk) driver
    keyboard = keyboard driver
    loop = Allows accessing a file as a block device
    scramdisk = Filesystem encryption driver
    event = Sample driver demonstrating notifying a user thread using an event
    multimedia = Multimedia drivers (sound/video) and kernel streaming
