LogKit is a logging toolkit designed for secure performance oriented logging in
applications.

The LogKit provides the following features:
  - Decouples LogEvent generation from LogEvent handling.
  - Is simple to use and simple to configure.
  - Designed with security in mind.
  - Allow users fine control of logging based on priority and/or category.
  - Has hierarchical logging namespace to enable inheritance of LogTargets and
    Priorities.
  - Lightweight.
  - Designed to be integrated into existing products.
  - Performance oriented.
  - Enables users to plug in filters to filter out or modify LogEvents before
    they are written out.
  - Allow users to specify the serialization format of LogEvents via
    Formatters.
  - Comes with a number of existing LogTargets to ease integration.
  - The LogKit has existed for a number years and been used in a number of
    different environments which demonstrates it's reliability and stability.

WWW: http://avalon.apache.org/logkit/index.html