Application blocks in .NET and types

Application blocks are a set of classes and methods for doing a specific task(like data access, security, logging, exception handling and others) written by Microsoft patterns and Practices team.Application Blocks can be freely used and customized by the developers for their own purpose.
There are following application blocks are available:
    1)Data Access application block
    2)Logging Application Block
    3)Exception Handling application block
    4)Caching application block
    5)User Interface Process application block
    6)Aggregation application block
    7)Configuration Management application block
    8)Asynchronous Invocation application block