Plugins in category Folder

FavoriteFolders

Adds favorite folders into FileChooser dialog toolbar.

IntelliJ Open Files Copier

Used for copying all open files in IDEA to separate folder.

Exclude Symlinks

Exclude symlinks in subdirectories.

PlainTextr

Mark files in directory as Plain Text recursively.

Joda Beans Code Folding

Provides folding for code generated by Joda Beans.

Folder notes

You can create a note for a sub folder under Src in the project; Method of operation: click on the folder to note, click the right mouse button, select "Folder notes".