Marimo Comments is a replacement for Django's comments application. Regular django comments are slow and inefficient to search for because they rely on individual generic foreign keys to point to the content object. Marimo Comments uses a 'bucket' object which has the gfk to the content object and the 'comment' objects just have a hard foreign key to the 'bucket'. This makes queries much faster.
For the front-end, Marimo Comments uses the Marimo widget framework/tools here
https://github.com/coxmediagroup/marimo
and django-marimo to wire marimo into the django views