Some of the modules and themes listed here are for older versions of Fork CMS.

More recent themes and modules can be found on github in the Friends of Fork CMS organisation

Guestbook

The guestbook module enables guests to write comments on your website.

Github
https://github.com/nstCactus/module-guestbook 

Not compatible with the latest Fork CMS version. This module needs an upgrade!

The bottom line is that everyone loves Fork.