Here are some of our projects.
Quality News
Quality News is a Hacker News client that provides additional data and insights on Hacker News submissions, notably, the upvoteRate metric. The upvoteRate is designed to better reflect the intent of the community as revealed by their upvote behavior. We believe this calculation can be a key component in the design of social protocols. See the readme on GitHub for details.
Propolis
Inspired by pol.is, Propolis enables useful discussions among thousands of people. See the readme on Github.