Ask HN: New generation social SDK's for 2014 projects?

Social is still strong and instead of being a side-line project, its a solid part of our life.

Any recommendation for current-gen SDK which can do following: - Work on top of FB, G+, Twitter, LinkedIn, Phone Contacts - Helps to find friends of friends using the service - RW access when permissions are given - Has server side & mobile client SDK's

Thanks!