Just wondering if someone has made an OSX app like Pyro but for Backpack.

Pyro is a standalone OSX app for Campfire if you aren’t sure what I’m talking about. Info: http://www.karppinen.fi/pyro/

You can make your own with Fluid: http://www.fluidapp.com/

Check out PackRat at http://www.infinitenil.com/packrat

There was also http://osx.iusethis.com/app/hiker but it seems to be moribund. I tried it and couldn’t really see what it did differently than an ordinary browser.