Commentics is a free, advanced PHP comment
script with many features. It is professionally written and uses open source
code. Its main purpose is to be integral, customizable and secure, and is
designed to be integrated into your existing pages. This includes a highly configurable
back end with multiple admins already figured in. You can also use the database
backup and use online viewers for specific documents. These tools and much more
are built into the protected open source software, of which you can download a
free demo and try out before you invest any more time and money into it.