There is a already question that asks about opening a large log files.

But my intention is different. Is there any application that monitors a log file and updates as it is updated in real time?

Platform: Windows XP/2003/2008 server

[Update] this is quite handy for a quick monitoring(thanks to Ckarras's answer)
Quick screen shot of PowerShell type -wait (type is an alias for get-content) alt text

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  • Which IDE are you using? – chickeninabiscuit May 8 '09 at 6:28
  • @Sung, Do you need readonly or editable? – Pacerier Aug 25 '15 at 10:29

13 Answers 13


I've been using BareTailPro for awhile, and have been very pleased. It hasn't been updated in awhile, but it still meets my needs. There's also a free version.

Here's some of the features:

  • View files of any size (> 2GB)
  • Configurable highlighting
  • Monitor multiple files simultaneously
  • High-performance search algorithm
  • Regular expression text search
  • Filter tail mode (include or exclude lines)
  • 1
    This is what (BareTail Free version) I settled with for now. Thanks Rob – Sung M. Kim Jul 19 '09 at 17:35
  • This is much slow for big files with long lines and the last update is from 2006 (12 years ago). The best program is pointed on this other answer Log viewer on Windows. The program glogg despite being simpler than this, handles big files with much better performance, was updated just last year, is open source (github.com/nickbnf/glogg) and has support to Windows, Linux and Max OSX. – user Jan 25 '18 at 15:12

There's also an equivalent to "tail -f" under Windows, if you have PowerShell installed:

type -wait
  • 2
    Wow. this is quite awesome. I had no idea about that "-wait" option for "Get-Content". Thanks ckarras. I have also updated question with the screenshot. – Sung M. Kim Sep 12 '09 at 17:41
  • 4
    Have an upvote for giving an answer that shows you can do this right out of the box if you know how to use OS and that you don't need to install 3rd party tools. – Ryan Ries Nov 9 '12 at 13:51
  • For those of us unfamiliar with tail -f, what does type -wait do? – Steven M. Vascellaro Jul 2 '18 at 19:09
  • 1
    It continuously watches the file for appended data and writes the new content to the console – ckarras Jul 3 '18 at 20:06

I use Notepad++ as my default text editor on all my systems, and it has the nice bonus of having this built-in - just go Plugins -> Document Monitor -> Start to monitor. You can also use File -> Reload from disk to manually reload it.

  • 5
    +1 Wow, I have been using Notepad++ for awhile but didn't know about this functionality. thanks. – Sung M. Kim Apr 30 '09 at 23:57
  • 1
    does this still exist, I don't see it in version 5.9.8 that I just downloaded. – Scott Jan 20 '12 at 17:07
  • 1
    @Scott can be downloaded as a plugin sourceforge.net/projects/npp-plugins/files/DocMonitor – Fishcake May 11 '12 at 10:18
  • +1 from me too. I love Notepad++ but didn't even think of looking for a plugin. Bye bye BareTail. – Fishcake May 11 '12 at 10:19

You don't mention which platform you're using, but on Unix-like systems the tail command does this:

tail -f /var/log/messages

In fact there are implementations of tail for Windows also (eg. unxutils).


If windows is your thing you could try Tail for Win32.

edit: Another alternative I just found is TailXP. It's free, but not opensource. Looks ok from the description but I haven't tried it.

  • The advanced features feel a little buggy but for simply tailing the file, it's perfect. – Michael Haren Apr 30 '09 at 23:10
  • 2
    Because of "tail" stuff people were mentioning, I found something called "BareTail" - baremetalsoft.com/baretail So far it seems to be doing what I wanted. But I am open for more suggestions. – Sung M. Kim Apr 30 '09 at 23:34
  • That one looks nice to know about too. – Jorge Alves Apr 30 '09 at 23:40

Actually, Log-Expert does what you want, plus a lot of nice feature

Features for Log-Exprt

  • yeah, this solution rocks. Better than notepad++, which only updates every 3 seconds, and is a bit flaky. – Jacko Mar 10 '11 at 19:52
  • Plus its free :) – Sameer Apr 7 '15 at 19:15
  • @VonC, Any disclaimers? – Pacerier Aug 25 '15 at 10:29
  • @Pacerier none that I can think of. But that was 6 years ago. – VonC Aug 25 '15 at 10:33

I have had good luck with the windows program mtail. It does a very nice job of monitoring an active log. You can configure quite a few options but in general I have found the defaults work very well.


  • Great! I didn't get to run into this one. – Sung M. Kim May 3 '09 at 0:23

Like tail -f file.log?

  • But doesn't this mean I have to be running the command constantly? – Sung M. Kim Apr 30 '09 at 23:20
  • No, the tail command will wait after printing the last line, and when the file is updated/appended it will print the new line(s) and wait again. Instead of plain tail you might try vanheusden.com/multitail. – hlovdal Apr 30 '09 at 23:26
  • He also said for the Windows OS. – Pure.Krome May 1 '09 at 0:02
  • 3
    Not when I answered, he hadn't. – Sophie Alpert May 1 '09 at 0:32

"tail -f logname"?

  • He edited his post to say it's for Windows OS only. – Pure.Krome May 1 '09 at 0:02
  • 1
    There are plenty of versions of tail for Windows, including in cygwin. – Paul Tomblin May 1 '09 at 0:13

I love the Kiwi Log Viewer. They were just bought out by Solarwinds -- I assume the product is still for sale (or maybe they're giving it away for free now? They're giving away a few other Kiwi products).


If you install Cygwin on your Windows machine, you can run tail

  • Hmm. Cygwin. I haven't played around with that for years... – Sung M. Kim May 3 '09 at 1:49

I typically do this with TextPad. It has the option to monitor that a file has been modified. It is an option to either automatically update the window or to prompt you whether or not you want to reload the file.

  • It looks like TextPad has a the same capability as NotePad++'s Document Monitor plugin – Sung M. Kim May 3 '09 at 0:26

If you're using eclipse there's a fully sick plugin called Log Watcher


It supports multiple files, plus color highlighting.

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