Device assistants are generally needed when you want a device that has to be connected and interact with your PC. These generally imply a software solution provided by the device manufacturer, like Nokia or Dell.
Ultimate Multi Tool
Wondershare Software Co., Ltd.
APIX Korea YH
Aladdin Knowledge Systems
Portrait Displays, Inc.
Geo Studio Technology Ltd
RemoteMyApp sp. z o.o.
Sony Computer Entertainment Inc.
ASUSTeK COMPUTER INC.
Zhuhai Seine Technology Co., Ltd.
Linksys, a Division of Cisco Systems, Inc.