Gadgetopia

Fluid - Free Site Specific Browser for Mac OS X Leopard: This is like Prism for Firefox.

[…] Site Specific Browsers (SSBs) provide a great solution for your WebApp woes. Using Fluid, you can create SSBs to run each of your favorite WebApps as a separate Cocoa desktop application. Fluid gives any WebApp a home on your Mac OS X desktop complete with Dock icon, standard menu bar, logical separation from your other web browsing activity, and many, many other goodies.

“SSB” is fast becoming a semi-official acronym for “Site Specific Browser,” although the next step along that line is for that browser to allow the site to have some special functionality or access to the parent system.

For much more on this theory, see “Owning the Container” from a few years back.