Modules and Themes 
betterbrief/silverstripe-opauth
Version dev-master
SilverStripe 3.1 OpAuth module. See: http://opauth.org/
jonom/silverstripe-share-care
Version dev-master
Social media sharing previews and customisation for SilverStripe
innoweb/silverstripe-social-metadata
Version dev-master
Adds social metadata like OpenGraph, Twitter and JSON-LD to all pages.
gdmedia/silverstripe-socialnetwork-links
Version dev-master
Simple Silver Stripe module to display social network links in your template
i-lateral/silverstripe-socialnav
Version dev-master
Adds a list of social media services that generates a list of links in a template
innoweb/silverstripe-social-share
Version dev-master
Adds sharing links and buttons for Facebook, Twitter, Instagram, Pinterest and Google+ as well as Ad…
gorriecoe/silverstripe-meta
Version dev-master
Improves silverstripes html meta data options.
innoweb/silverstripe-social-profiles
Version dev-master
Adds social profile links to the site.
sunnysideup/share_this_simple
Version dev-master
Silverstripe Module that provides a simple way to add share this links to your website.
dorsetdigital/silverstripe-simpleinstagram
Version dev-master
Retrieves the Instagram feed for a given user for embedding in a template
nswdpc/silverstripe-curatorio
Version dev-master
Module providing Curator.io feed support
toastnz/silverstripe-socialnav
Version dev-master
a fork from i-lateral/silverstripe-socialnav
bramdeleeuw/silverstripe-instagram
Version dev-master
Link your instagram account to you SilverStripe site and query the instagram api
nathancox/silverstripe-social-feed
Version dev-master
A social feed module for fetching content from Facebook and Twitter
innis-maggiore/silverstripe-social-meta-tags
Version dev-master
Adds social media meta tags to Silverstripe sites.
burnbright/silverstripe-sociallinks
Version dev-master
A quick and easy way to store,retrieve, and style social media links