CRM Super Tags
This Fat Free CRM plugin depends on http://github.com/michaeldv/crm_tags and builds on the work started with http://github.com/bkd/crm_customfields An admin interface lets you add custom fields to a tag. You can then tag any model and the custom fields for that tag will be available to you.
The super tags plugin can be installed by running:
script/install plugin git://github.com/crossroads/crm_super_tags.git
Then run the following command:
rake db:migrate:plugin NAME=crm_super_tags
Then restart your web server.