HackerWeb - A simple and readable Hacker News app
Fluid - Turn Your Favorite Web Apps into Real Mac Apps.
HackerScroll - Read top articles from HackerNews in a clean, simple and minimal interface without ads or any other distractions.
WebCatalog - Run your favorite web apps natively
HNwatcher - Track keywords and users on Hacker News
ToDesktop - Convert your web app to a desktop app in 2 minutes.