I used django-bootstrap-toolkit — as the author explains (with reference to other Django/Bootstrap integration apps)
"The approach to template tags and filters seemed right, but Bootstrap does so much more than just forms."
In addition to forms, then (which can be as simple as {% form|as_bootstrap %}, this app helps with pagination, inserting static URLs to the Bootstrap media files, and some other bits. Read templatetags/bootstrap-toolkit.py for the full list.
@dolan notes that the django-bootstrap-toolkit developer recommends a new project for Bootstrap v3 support, django-bootstrap3. I haven't tried this yet as I haven't started a new project since V3 came out, so YMMV.
