Devel::Graph module can turn Perl code into a graphical flowchart.

SYNOPSIS

use Devel::Graph;
my $grapher = Devel::Graph->new();

my $graph = $grapher->decompose( if ($b == 1) { $a = 9; } );
print $graph->as_ascii();

# Will result in something like this:

################
# start #
################
|
|
v
+--------------+
| if ($b == 1) |--+
+--------------+ |
| |
| true |
v |
+--------------+ |
| $a = 9; | | false
+--------------+ |
| |
| |
v |
################ |
# end # <+
################

# Alternatively, read in code from a file
my $graph_2 = $grapher->decompose( lib/Foo.pm );
print $graph_2->as_ascii();

This module decomposes Perl code into blocks and generates a Graph::Flowchart object out of these. The resulting object represents the code in a flowchart manner and it can return an Graph::Easy object.

This in turn can be converted it into all output formats currently supported by Graph::Easy, namely HTML, SVG, ASCII art, Unicode art, graphviz code (which then can be rendered as PNG etc) etc.