Wikipedia
WebGUI is an open source content management system written in Perl and released under the GNU General Public License.
The system permits non-technically minded users to arrange content in pages and layouts, containing 'Assets' ( applets) which permit website visitors to view and interact with various types of data from basic Articles to full-blown Content management system and custom applications.
In July 2014, Scott Walters proposed a project on Kickstarter to bring the nascent Version 8 rewrite to a formal release with a supporting free software community. Version 8 is, according to the Kickstarter project page, "a massive modernization effort that reworked core to use Moose, Plack, Try::Tiny" along with a general code cleanup. The project achieved its crowd funding goal on July 16, 2014.