Twitter launched Twitter Kit in 2014: a set of tools app owners use to integrate Twitter data and functionality. Since then, Twitter Kit adoption soared and Twitter increased its functionality. The v2.0 release constitutes the first major revision and a platform for expanded functionality and use.
Socialmod is a system to either automate or simplify your site's social content moderation. Its socialmod API allows for direct integration of socialmod into your site, making using their service far easier. Its service has been used for such high-profile sites as the BET.com awards, as described in its blog.