Raindrop.io - All your articles, photos, video & content from web & apps in one place.
Fluid - Turn Your Favorite Web Apps into Real Mac Apps.
Bookmark OS - Bookmark OS is like Mac or Windows optimized for bookmarks.
WebCatalog - Run your favorite web apps natively
Lookmark - Track updates from the apps you've bookmarked on iTunes
Web2Desk - Web2Desk is a tool to convert your favorite websites to Desktop app in just one click.