Is there any third party tool that can recognize Log4Net log file structure and show it in a user friendly way by providing search functionalities etc?
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1Here's another one: http://www.log4view.com/log4view/ I've used it for several years and like it. – RenniePet Nov 03 '15 at 02:16
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Check this side: https://github.com/NLog/NLog/wiki/Tools – Jens Jun 30 '21 at 08:53
5 Answers
Try GamutLogViewer.
GamutLogViewer© is log file, logfile, viewer that works with Log4J, Log4Net, NLog, and user defined formats including ColdFusion. It supports filtering, searching, highlighting and many other useful features. This is a Windows application.

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The free version now contains lots of advertisements for the paid version. – Thomas Glaser Nov 27 '14 at 14:34
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1In the free version, each line of an exception stack trace is displayed on its own line in the log view. So each exception fills 30 or so lines. Extremely annoying. – wezzix Jul 19 '17 at 08:32
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And here is another one called LogViewer4Log4Net [https://github.com/rhessinger/LogViewerForLog4Net] – oakman Oct 10 '17 at 06:06
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BareTail is a very nice tool to monitor log files.
You can monitor multiple log files, and the Pro version supports search.

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I've got BareTail right here and I see no way to search anything. Is that in the paid version only? – PandaWood Dec 10 '13 at 00:55
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@PandaWood We used the paid version so i think it won't be included in the free version. If i'm interested in some someware like that i'd try to find a way to use the full version(maybe if you know someone who has .... ) :) and if you like it buy a license. – JMan Dec 10 '13 at 06:03
This one looks promising:
http://yourlog4netviewer.codeplex.com/
Saw this one as well:
http://logexpert.codeplex.com/
Edited: this one as well:
http://insightextensions.codeplex.com/

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2yourlog4netviewer requires changing your output to XML. While that may technically be easy, it may also be undesirable to impossible depending on your circumstances (it's unusable for me) – PandaWood Dec 10 '13 at 01:00
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1logexpert is nice. It can perform actions based on regex matches or logfile rows, such as colour highlighting or even starting other processes! – Matthew Lock Aug 28 '14 at 00:15
You may want to look into Apache Chainsaw. It was designed for log4J which is what log4net was ported from so the two will work very well together
http://logging.apache.org/chainsaw/
You can display log messages directly to it via a UDP appender or log to an xml file that chainsaw can read.
http://logging.apache.org/log4net/release/howto/chainsaw.html

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1There is a new version of Chainsaw in the works with a ton of additional features and improved usability - developer snapshot available here: http://people.apache.org/~sdeboy – Scott Jan 30 '13 at 22:06
Sure, try this one: http://www.l4ndash.com/. It's web based and the developer version is free but restricted to use on one machine and can be accessed from the same machine.

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