Clog - Client Logging, WPF Edition A customizable log provider system that allows you to harness your existing logging system to log client side messages to your server using WCF. Includes WPF sample applications. Clog is a log provider system, it is fully customizable, thread-safe, can serialize and log all Exception types, and allows filtering of messages both on the client and server side using custom or inbuilt filters, which so far consists of an IP Address Range Filter, a Role Membership filter, and three new filters including an Environment User Name Filter, a Machine Name Filter, and a Time Range Filter. In this release of Clog we have an extendible Log provider system, a log4net log strategy, a simple tracing log strategy, and a new Microsoft Enterprise Library Logging Application Block log strategy.