Not all applications on the Android market can be installed by all Android devices. More specifically, each Android device only allows the user to choose from the subset of applications that are considered suitable to be installed on that device. For example, if you visit the Android Market with your browser, you get a list of over 200 applications in the communications (top free) category. Using the Market on a Nexus One lists more then 100 Applications for that very same category. However, using the Android Market on the Android SDK simulator (API level 10, platform 2.3.3) only lists two applications. Give their names in alphabetical order separated by a comma.