Packages 
Package Description
com.google.common.annotations
Common annotation types.
com.google.common.base
Basic utility libraries and interfaces.
com.google.common.cache
This package contains caching utilities.
com.google.common.collect
This package contains generic collection interfaces and implementations, and other utilities for working with collections.
com.google.common.escape
Interfaces, utilities, and simple implementations of escapers and encoders.
com.google.common.eventbus
The EventBus allows publish-subscribe-style communication between components without requiring the components to explicitly register with one another (and thus be aware of each other).
com.google.common.graph
An API for representing graph (node and edge) data.
com.google.common.hash
Hash functions and related structures.
com.google.common.html
Escapers for HTML.
com.google.common.io
This package contains utility methods and classes for working with Java I/O; for example input streams, output streams, readers, writers, and files.
com.google.common.math
Arithmetic functions operating on primitive values and instances.
com.google.common.net
This package contains utility methods and classes for working with net addresses (numeric IP and domain names).
com.google.common.primitives
Static utilities for working with the eight primitive types and void, and value types for treating them as unsigned.
com.google.common.reflect
This package contains utilities to work with Java reflection.
com.google.common.util.concurrent
Concurrency utilities.
com.google.common.xml
Escapers for XML.