Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
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Android service + TrustManager for managing custom certificates in an app-private key store
WebDAV (CalDAV, CardDAV) library for Android
DAVdroid is an open-source CalDAV/CardDAV suite and sync app for Android.
Allows usage of iCalendar files with the Android calendar provider
ICSdroid is an Android app to subscribe to remote or local iCalendar files (like time tables of your school/university or event files of your sports team).
Block calls from annoying or private numbers on your Android device.
Allows usage of VCard files with the Android contacts provider