It’s basically just a website / chrome extension that pulls in articles from Hacker News, Lobsters, /r/programming and Product Hunt.
It’s also a chrome extension: https://chrome.google.com/webstore/detail/coven/fnebcmfaoeak...
and open sourced: https://github.com/goddamnyouryan/coven https://github.com/goddamnyouryan/coven-api