Fluid - Turn Your Favorite Web Apps into Real Mac Apps.
WebCatalog - Run your favorite web apps natively
Web2Desk - Web2Desk is a tool to convert your favorite websites to Desktop app in just one click.
GNOME Web - GNOME Web is the web browser for the GNOME desktop, based on the popular WebKit engine.
ToDesktop - Convert your web app to a desktop app in 2 minutes.
Applicationize - Seamlessly convert web apps into desktop apps