App::highlight is a bit like grep, except that it doesn't filter out lines. In exchange for seeing all the output you get a lot more fun highlighting options to play with, and full Perl regex support of course. I gave this talk at the London.pm technical meeting in July 2013. App::highlight is available on Github and CPAN.Read less
![App::highlight - a simple grep-like highlighter app](https://cdn-ak-scissors.b.st-hatena.com/image/square/30f11c242ab6fd420e45c968679f279fe4cf2007/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fapp-highlightl-130726044558-phpapp02-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)