Our app uses Prism/MEF and now we need to tie into twitter/facebook/linkedin/google+ etc.
The Spring.Net social library seems to wrap a few of those so question is -
Is it possible to use only spring.social from a wpf app ?
Or alternatively, any other library which wraps a few of the social api's ?
One other library we found is socialauth.net but that's primarily for use in web apps
Afaik, you don't need to use spring.net dependency injection framework to use spring.social; it only has a dependency on spring.rest (which in turn has no dependencies). So you should be able to use it with Prism/MEF or whatever framework you use.
Check out the nuget packages - it appears that atm Twitter, LinkedIn and Dropbox are supported, so not all your requirements are met.
It appears that a facebook lpugin is under development at the moment.