I want to implement Facebook connect login for my Django site and I\'ve checked the already existing apps.
So far, I have found Django-Socialauth, django-socialregistrat
I played with .NET based libraries and found them to be frustratingly out of date. Facebook seems to change their APIs frequently, so if you cannot find a library that is routinely maintained, you will find that you will get halfway through your implementation before you realize that there are serious problems.
I had some success with the javascript API that Facebook publishes and maintains. While the documentation may not be always up to date, I found that I was always within striking distance of the correct implementation (one or two changes needed).