Box Piper Hacker News - Re-Imagined Hacker News for this decade.
HackerWeb - A simple and readable Hacker News app
Hacker News Front Page Explorer - A database of top ranking Hacker News front page posts
Boreal - A Hacker News iOS app
Hacker News Stack - Focus on the really fresh and unread news in Hacker News.
MackerNews - Beautiful Readable Hacker News Articles