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Packrat is a desktop client for 37signals Backpack Web application. You can download your Backpack data and use it offline. View it, make changes, create new pages, etc. When you're online PackRat automatically sends your changes up to Backpack keeping everything in sync.

What's New

Version 2.1.3:

  • Fixed crash restoring open documents caused by sandboxing
  • Now requires Lion due to sandboxing issues


  • Mac OS X 10.6.6 or later
  • Backpack account

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5 2


Current Version (2.x)


Downloads 7,245
Version Downloads 231
License Commercial
Date 15 Sep 2012
Platform Intel 64 / OS X / Intel 32
Price $9.99