Django/Web Modules

Modernizer - Feature Detection for JS
http://modernizr.com/

Django-flash - Rails-like django flash messages:
https://github.com/danielfm/django-flash

Facebook-Graph - Django facebook graph API
https://github.com/feinheit/django-facebook-graph

django-cumulus - Rackspace manager

http://packages.python.org/django-cumulus/

Django-ittybitty - Django based URL Shortener:

http://code.google.com/p/django-ittybitty/

django-ittybitty

Django Storages

http://django-storages.readthedocs.org/en/latest/
django-storages

Python-Postmark - API for http://postmarkapp.com/

https://github.com/themartorana/python-postmark

Django Cache Utils

http://pypi.python.org/pypi/django-cache-utils

stripe-python - API for Stripe.com (like Braintree)

https://github.com/stripe/stripe-python

FrogBugz - online ticket tracking system

http://www.fogcreek.com/fogbugz/pricing.html

Form Builder
http://www.wufoo.com

Factual - service for data information and places. GeoData
http://v2.factual.com/

CartoDB - open source data browser db
https://github.com/Vizzuality/cartodb

GeoCoda - Online Geocoding tool
https://geocoda.com/

Census Tiger Dataset
http://www.census.gov

SendGrid - Email Web applications
http://sendgrid.com/

RapidSSL - Cheap SSL Host

django-tables2 - manipulate html tables programmatically similar to Django forms.
http://django-tables2.readthedocs.org/en/latest/index.html

django-message-extends - extensions to Django messages such as sticky messages and assigned messages
https://github.com/AliLozano/django-messages-extends