Difference between Windows CE and Pocket PC/ Mobile

Windows CE is a collection of operating system components, which is available to developers and device manufacturers to create customized embedded devices. Device manufacturers (which includes Microsoft too) can use Windows CE .NET to build both a customized OS and applications for a variety of devices requiring a small-footprint. Microsoft built Windows Mobile software for the Pocket PC on Windows CE by adding new functionality, user interface, and applications to create an optimized mobile computing platform for handheld devices. Other companies can built another Windows Mobile type operating system using Windows CE too. In Windows Mobile, Microsoft has added Mobile version of its Office Applications (Word, Excel etc.) and many other features on top of Windows CE. Platform Builder is the integrated development environment for building, debugging, and deploying a customized embedded OS based on Windows CE . For detail information on comparison between Windows CE and Windows Mobile, refer Comparison Document on Microsoft's Website.