android-metadata is a utility library for Android designed to simplify reading metadata values from AndroidManifest.xml. It can quickly access metadata values from anywhere with a few lines of code, read individual metadata values into type-specific variables, and read one or more metadata values into annotated Java classes.
Cling is a complete, clean, and very flexible Java implementation of the UPnP Device Architecture specification. Additional UPnP service modules and graphical tools are also part of this project. Cling helps you create, control, and monitor UPnP-compatible services on your local network. Cling can be used as an UPnP/DLNA library for Android application development.
metagloss is an annotation-centric Android library for reducing boilerplate code. Relying on run-time parsing and compile-time code generation, metagloss provides facilities for mapping XML and databases to data objects, dealing with preference screens and working with DB queries.
OpenUDID provides a cross-platform method for generating globally unique per-device identifiers. UDIDs are used for analytical or CRM purposes, such as to track how much time users spend in free apps before upgrading to the paid version, or for tracking the source of a download when advertising on an ad network.