OAuth

Few tips:

settings.py

    INSTALLED_APPS = [
       'PREDEFINED APPS',
       'CUSTOM APPS',

       'django.contrib.sites',

       'allauth',
       'allauth.account',
       'allauth.socialaccount',
       'allauth.socialaccount.providers.google',
       'allauth.socialaccount.providers.twitter',
       'allauth.socialaccount.providers.github',
   ]
    TEMPLATES = [
       {
           'BACKEND': 'django.template.backends.django.DjangoTemplates',
           'DIRS': [os.path.join(BASE_DIR, 'templates')],
           'APP_DIRS': True,
           'OPTIONS': {
               'context_processors': [
                   'django.template.context_processors.debug',
                   'django.template.context_processors.request',
                   'django.contrib.auth.context_processors.auth',
                   'django.contrib.messages.context_processors.messages',
               ],
           },
       },
   ]
   
   LOGIN_REDIRECT_URL = 'home'
   LOGOUT_REDIRECT_URL = 'home'


   AUTHENTICATION_BACKENDS = (
       "django.contrib.auth.backends.ModelBackend",
       "allauth.account.auth_backends.AuthenticationBackend",
   )

   SITE_ID = 1

   ACCOUNT_EMAIL_REQUIRED = True
   ACCOUNT_USERNAME_REQUIRED = False

project/urls.py

   url(r'^accounts/', include('allauth.urls')),

templates/home.html

   {% load socialaccount %}

   {% if user.is_authenticated %}
   <p>Welcome {{ user.username }} !!!</p>
   <p><a href="{% url 'account_logout' %}">Log out</a>
   {% else %}
   <p><a href="{% url 'account_signup' %}">Sign Up</a></p>
   <p><a href="{% url 'account_login' %}">Log In </a></p>
   <p><a href="{% provider_login_url 'google' %}">Log In with Gmail</a></p>
   <p><a href="{% provider_login_url 'twitter' %}">Log In with Twitter</a></p>
   <p><a href="{% provider_login_url 'github' %}">Log In with Github</a></p>

   {% endif %}

Most important is the callback URL this causes a lot of trouble

Github developer Area

Twitter Developers Area

In the localhost:8000/admin

You should change the Sites Domain.

Register your twitter or github app in the Social Applications with the keys provided to you

Notes

It was very troublesome to get good guides as most of them are 2-3 years old and the technologies have changed. Twitter does not even porvide a guide for starter it took too much effort to join every piece together and finally built this.