LumberJack4Logs

LumberJack4Logs is a powerful application, designed to help you analyze log files, filter their content to better understand the contained data and save specific entries to various formats.
It offers numerous useful functions, but features an outdated interface that can take a bit of getting used to. If you do not have experience with log file analysis, you might have difficulties operating this software, as its functions may be difficult to understand.

Load and follow multiple files

The application enables you to load multiple log files at the same time, to view all their content in a single window.
You can follow one or more of the loaded log files, allowing you to view any content added to them in real-time. The application can even scroll to the newest entry automatically.
The entries in the log event list are color coded depending on their level, making it easy to find important messages.

Apply various filters

It can be very difficult to find the events you are looking for when working with large files. LumberJack4Logs allows you to configure and save multiple filter sets, depending on the types of entries you need to view.
You can set a log level threshold, so that only events of equal or higher levels are displayed. This allows you to view only urgent messages, to be informed if any critical errors occur. It is also possible to filter events by thread, logger, context, message and timestamp.
Additionally, you can view all loggers in a hierarchical tree structure and activate or deactivate certain elements in the tree.

Save filtered events to various file formats

Once you have loaded one or more log files and filtered the events to that only the ones you are interested in are displayed, you can save all the entries to a new file. The program supports the following output formats: BIN, HTML, XML and TXT.
All in all, if you need a tool that can analyze numerous log files, apply various filters and save certain events to new files, you can try LumberJack4Logs.