CBG corporation
CBG Corporation is an engineering and manufacturing company focused on the changing needs of the Petroleum Exploration and Production industries. Since 1992, CBG has been supplying the industry with state-of-the-art logging tools and sensors for Production Logging, Open-Hole Logging, Directional Drilling and MWD.
http://cbgcorp.com

WellSight Systems Inc.
Software product line for horizontal and directional logging, mud logging, core logging, and well log analysis.
http://www.wellsight.com/

Java Logging API Specification
The home of a Java Community Process expert group defining standard logging APIs for error and trace logging. The latest draft and status history is available.
http://jcp.org/en/jsr/detail?id=047

jLEA (Journaling and Logging Enterprise Applications)
A logging system written in pure Java for logging and supervising non-distributed as well as distributed Java-, J2EE- and legacy applications. [Commercial]
http://www.jlea.de/

Logging with log4j - An Efficient Way to Log Java Applications
Learn about the need for logging and Log4j, the Open Source framework for logging Java applications for debugging and monitoring purposes.
http://www.developer.com/open/article.php/3097221

Oregon Logging Conference
The largest logging equipment show in North America
http://www.oregonloggingconference.com/

IBM Logging Toolkit for Java
A tool that improves the reliability of Java applets and applications with its message logging and tracing functions.
http://www.alphaworks.ibm.com/aw.nsf/techmain/loggingtoolkit4j

Bailey Logging Supply
Online retailers of logging equipment, including chainsaws, portable sawmills, and competition saws and axes.
http://www.baileys-online.com

Advanced Logic Technology
Design and production of slimhole imaging probes, acoustic and optical televiewer, data logging systems and geophysical borehole logging equipment.
http://www.alt.lu/

JLogger
An implementation of the Java logging API (java.util.logging) including a graphical user interface. [Open Source]
http://www.javelinsoft.com/jlogger/