HackerWeb - A simple and readable Hacker News app
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Hacker News Stack - Focus on the really fresh and unread news in Hacker News.
Why is this interesting? - Every weekday Noah Brier & Colin Nagy (and friends) send an email about something interesting.
HNBuddy - An elegant iOS client for Hacker News ✨
LetsNews.app - Mailtrain hosting. Send newsletters cheaper via Amazon SES