Less - Less extends CSS with dynamic behavior such as variables, mixins, operations and functions. Less runs on both the server-side (with Node. js and Rhino) or client-side (modern browsers only).
grepWin - grepWin is a simple search and replace tool which can use PCRE regular expressions to search for...
more - More is a filter for paging through text one screenful at a time.
dnGREP - dnGrep allows you to search across files with easy-to-read results.
Bat - A cat(1) clone with wings.
PowerGREP - Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...