Log4tailer the opensource log monitor application I’m working on was released on its version 2.4 some weeks ago. Log4tailer has helped me to catch some undesirable log traces in many Java enterprise applications in my career.
I’ve seen many QA and test engineers failing to catch important information due to the white on black terminal foreground/background of the world famous Windows Putty terminal emulator and the tail Linux command line tool. Not their fault, but the lack of knowledge of the Linux OS and the fear of using other applications seem to scare some people. Professional applications (server side) tend to log thousands of logtraces very fast. This information is nearly impossible to follow unless you use a proper tool to spot specific traces and levels. Either you are a very fast reader (not very common) or you end up lost in a sea of white lines in a black background. In order to solve that problem, log4tailer use plenty of color combinations, pauses the output if a logtrace has been found, throttles the output, notifies you by email if you want to and at the end gives you a report. Of course, there are more features and possibilites.
Currently log4tailer is suffering some refactoring to fix some design problems when it was first written some more than three years ago. Documentation is provided in pdf as I began writing the documentation using LaTeX. If anyone would like to mantain a wiki, it would be really good.