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Is there any log viewer application for OS X out there, which is a little bit more "fancy" than tail? Say, with some highlighting capabilities and filtering?

The only one I found was KIWI, but I was not very happy, because it seemed to be a bit slow and pushed stack traces far out to the right side.

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less -F is useful in Terminal.app (or key F in less) –  Thorbjørn Ravn Andersen Aug 8 '11 at 20:17

4 Answers 4

up vote 18 down vote accepted

Have you looked at the "Console" application that's already installed on your Mac under /Applications/Utilities/Console.app? Its entire job is to display the various log files, and it's definitely "a little bit more 'fancy' than tail".

enter image description here

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Great screen shot! How did you catch the shadow - white background? –  trolle3000 Aug 9 '11 at 5:53
Although it lacks highlighting, it seems to be quite fast and the filtering works nice. –  Elbonian Aug 10 '11 at 8:21
You can capture a window in Mac OS X by triggering the 'save picture of selected area as a file' (shift-command-4 usually) then pressing space. –  JP. Feb 12 '13 at 11:36

Just an aside, for whoever else (like me) happens upon this question.

A good solution is textwrangler! The file will autoupdate while open with textwrangler, which is an unexpected but nice feature, and a separate use for an otherwise strong text editor.

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For log viewing I am missing ability to highlight occurrences of multiple texts in a file in TextWrangler. Did I perhaps overlook a way to do it? Also marking occurrences in scroll bar would be helpful. Because of lack of these two features I am looking for alternative for log viewing. –  Michal Jan 22 at 12:04

Another nice piece of software for viewing logs is Logr. It allows you to highlight lines based on substrings.

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I'm not happy with it! It doesn't put line numbers on log lines. It doesn't fold them over when they exceed the window width (so I cannot see the entire log line) and it doesn't seem to have a horizontal scroll bar! –  Saqib Ali Jul 1 '14 at 17:49
It's doing the job nicely for me, especially given the price - free. –  Kong Dec 11 '14 at 21:48

You might also like the cross-platform multitail. It's an ncurses-based console application which has great searching/filtering support. I especially like merging several files into one and coloring files by applying regular expressions. Also, being console-based, you can easily use it over SSH.

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