With Adobe Extension Manager you can install and manage new extensions.
For Adobe InDesign CS5/CS5.5/CS6 only BigPicture gives you the most comprehensive solution for managing graphics and picture links in Adobe InDesign..
Retrieves number separators correctly in spreadsheets.
InDesign/InCopy plug-in for converting legacy print documents into e-books.
Adobe InDesign plug-in for creating different page sizes.