Hacker News Stack - Focus on the really fresh and unread news in Hacker News.
WeSwap - P2P currency exchange. Travel money on your smartphone.
Hacker Newsletter - Best of Hacker News in your inbox every Friday.
US Dollar Inflation Calculator - Calculate the value of the US dollar adjusted for inflation
Box Piper Hacker News - Re-Imagined Hacker News for this decade.
Orion Desktop - QML/C++-written cross-platform desktop client for Twitch.tv