GitHub Visualizer - Enter user/repo and see the project visually
HackerWeb - A simple and readable Hacker News app
Codeology - Open-source algorithm that visualizes GitHub projects
HackerScroll - Read top articles from HackerNews in a clean, simple and minimal interface without ads or any other distractions.
The GitHub Matrix Screensaver - Latest commits from GitHub visualized Matrix-style
HNwatcher - Track keywords and users on Hacker News