Intellij IDEA. Hide .iml files

Go to File -> Settings -> File Types
Append *.iml to the list below "Ignore files and folders" (located at the bottom of the dialog)

Check “Ignored files and folders” in File Types settings:

File | Settings | Editor | File Types for Windows and Linux

IntelliJ IDEA | Preferences | Editor | File Types for OS X

Then add *.iml;*.idea; in the text box in the bottom:

Hide Files and Folders in Intellij

http://blogs.jetbrains.com/idea/2011/04/intellij-idea-does-not-show-some-files-know-the-hiding-places/

For Intellij IDEA 13 on OS X 10.9, do this:

Go to Intellij IDEA > Preferences.
Scroll down to the IDE Settings section, go to File Types.
Add *.iml and .idea to the Ignore files and folders list box at the bottom of this window.

The project navigator will be much cleaner!

I hope it helps!

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