From Ctrl Publishing:
CtrlLayers is a plug-in for Adobe InDesign CS3 users that require a smart and clever solution to expand the usage of working with layers. Art Directors and Graphic Designers will at an early stage of a project for example be able to share a layer to new document and put translators to work, then later on bring back the layer without worrying about fitting. Just like InDesign users are used to import color swatches from a InDesign document, CtrlLayers will give you the same ability to import layers from other InDesign documents. So, if you are looking for a smart and "easy to use" solution, CtrlLayers will give you new exciting possibilities. Key Features: Create new InDesign document from visible layers; Import layer(s) from InDesign document.