Hacker News Stack - Focus on the really fresh and unread news in Hacker News.
ParityDeals - ParityDeals automates dynamic pricing, enabling you to adjust prices based on location, time of day, or season and boost conversions in individual markets
Box Piper Hacker News - Re-Imagined Hacker News for this decade.
Hacker News Front Page Explorer - A database of top ranking Hacker News front page posts
HN buzz - Tech news filtered by your keywords and sent to Telegram
HN to Kindle - Read Hacker News on your Kindle