Android, on the other hand, is open. This means that it is being developed primarily by Google, and with the help of a group of companies. Many of the members of this group, the Open Handset Alliance (OHA), will release smartphones based on the Android operating system. Some of these companies include HTC, Samsung, and Motorola. There are advantages and disadvantages to both operating systems, and the competition between the two platforms is going to shape the smartphone market for years to come.