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..
Combines the editing power of Google Docs with the layout power of InDesign.
Create transparent links between your documents and your databases.
Plug-in for threading of text frames in InDesign CS or higher.