GitSpo - Measure & engage your open-source community
HackerWeb - A simple and readable Hacker News app
Devo - Devo delivers real-time operational & business value from analytics on streaming and historical data to operations.
HackerScroll - Read top articles from HackerNews in a clean, simple and minimal interface without ads or any other distractions.
LibHunt - LibHunt tracks mentions of software libraries on relevant social networks. Based on that data, you can find the most popular projects and their alternatives.
HNDigest - Top Hacker News stories in your inbox