Andy Lester

ack is a tool like grep, aimed at programmers with large trees of heterogeneous source code. ack is written purely in Perl, and takes advantage of the power of Perl's regular expressions. * Searches recursively through directories by default, while ignoring .svn, CVS and other VCS directories. ... [More] * ack ignores most of the crap you don't want to search * Lets you specify file types to search, as in --perl or --nohtml. * Color highlighting of search results. * Uses real Perl regular expressions, not a GNU subset. * ack is pure Perl, so consistent across all platforms. It even comes as a single standalone program with no module dependencies. [Less]

Perl::Critic::Bangs is a collection of Perl::Critic policies that will help make your code better.

HTML::Lint, a pure Perl module for checking HTML