Sometimes, when reading books on my laptop (running OS X 10.8.5 Mountain Lion) I would like to view two separate pages from a book in my Kindle library (or two separate books) at the same time. Unfortunately, the app does not allow more than one window open at once. To get around this, I tried creating a second instance of Kindle.app called Kindle2.app. However, when I try to open it while the first one is open, the icon just bounces in the dock and then disappears. I tried changing the CFBundleIdentifier field in Kindle2.app/Contents/Info.plist, which is an approach I have used to allow 2 copies of nvALT to run at once. However, this does not solve the problem. What should I do?

PS I know I can use Kindle Cloud Reader, but I would like to run a second instance of the app.

  • One idea that, unfortunately, does not work is to download one copy from Amazon.com and one from the App Store. Still no dice. – Jimothy Jul 16 '15 at 14:40

There are 2 ways to do this. First open up the OSX kindle reader in the normal way. Then:

  1. Use the online kindle cloud reader in addition.


  1. Download the windows reader and use wineskin to open an instance. This actually works flawlessly. It is necessary sometimes as the online reader can not read all kindle books at this time.

You can open easily another instance from the commandline:

open -n /Applications/Kindle.app

It will create a second instance of the app.


You could maybe also use another reader for the second book.

For example the Kindle Cloud Reader. You can read the second book directly in the browser.

  • Thanks for your answer Chris. However, just tried it and it does the same thing as when I click-- icon bounces for a second and then disappears. Any ideas? – Sean Mackesey Oct 13 '13 at 0:12
  • I've edited my answer. You can also use the kindle-cloud reader to read the second/same book in a webbrowser. Maybe not really comfortable, but so you would be able to read it. – Christian Wörz Oct 13 '13 at 0:19

Since 10.8, sandboxed applications have crashed on launch if their Info.plist has been modified. To prevent it, you can disable sandboxing by replacing the code signature with an ad-hoc signature:

cp -r /Applications/Kindle.app /Applications/Kindle2.app
defaults write /Applications/Kindle2.app/Contents/Info.plist CFBundleIdentifier my.kindle
codesign -f -s - /Applications/Kindle2.app

When I opened Kindle2.app, it used ~/Library/Preferences/my.kindle.plist instead of ~/Library/Containers/com.amazon.Kindle/Data/Library/Preferences/com.amazon.Kindle.plist as the preference file. I still wasn't able to open Kindle.app and Kindle2.app at the same time though.

  • Running the codesign command, I got the following output: /Applications/Kindle2.app: replacing existing signature /Applications/Kindle2.app: code object is not signed at all. This app was downloaded from the App Store, rather than from Amazon.com. – Jimothy Jul 16 '15 at 14:39

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.