Oh, that's easy.

use Magick::Software;
no strict;
Magick::Software->enable_esp(1);
Magick::Software->disable_specifications(1);

Magick::Software->dwiw( how_much => '$5,000 worth',
                        how_hard => 'pretty complex' );
[download]

But seriously, you can do what you want with raw DBI, a good ORM like DBIx::Class, and a JavaScript library with excellent CSS/plugins or nice prefab UI like ExtJS. There are also a few modules to use and manipulate Excel and Excel-like records. A good web framework (Catalyst, Dancer, Mojolicious...) will make it all fairly easy to hang together.

Your question as it stands is entirely too vague to help you beyond similar generalizations.

It's not that easy, And without seeing any effort on your side i.e: no DB structure or codes ... then I would suggest that you use google docs , make a document & share it with people you want.

You could achieve this using a Perl on the server side and some jQuery (see this plugin) on the client side.