From Em Software:
Em DocsFlow brings the collaborative editing power of Google Docs to InDesign, providing dynamic linking from any InDesign story to a target Google Docs document, along with the almost magical ability to re-weave any Google Docs document changes into the linked story, on update. The breakthrough concept embodied by DocsFlow is to marry freely-available and popular web-based editing tools (Google Docs for now) to InDesign, giving you a zero-cost per-seat editorial workflow solution that is extraordinarily easy to manage. And using DocsFlow means you need no special resources to build, maintain or learn the editorial side (which is just Google Docs). Further, DocsFlow builds on the built-in InDesign story linking machinery to avoid any learning curve on the design side.
With DocsFlow, both the InDesign story and the Google Docs (GDocs, below) document can be edited independently, and the links palette will show you the status of both at any point. When the GDocs document is edited, you'll see the link's status change to "modified" (showing a yellow alert icon), and you can update the story from GDocs with a double-click on the icon. Any changes on the GDocs side are merged into the the story, even if the latter has been changed. After each update, you can open the story editor with change marks showing, to see who changed what. Most of the text-level formatting in the GDocs document will import naturally, and GDocs block-level styles are mapped automatically to InDesign styles. GDocs comments import as InDesign notes.
Adds a Relink to Google Docs… entry to the DocsFlow Links panel menu and enables re-linking in general of existing DocsFlow links.
Adds drag-and-drop support for Google Drive documents to the Place Google Docs Document dialog. Dragging a URL from docs.google.com or files from a Google Drive folder will select those items in the dialog’s list of documents. Dropped items not found in the list (maybe they’re from a different Google account) are quietly ignored.
Fixes a problem introduced in the 2.10.5 release where some shared folders aren’t displayed and the contained files are displayed at the top-level of the Place Google Docs Documents dialog
Adds Set Default Import Options from Link… to the Links panel’s DocsFlow menus so that the import settings used to place a Google Docs document can be viewed and used with the next Place from Google Docs.
Displays items in the Export to Google Docs dialog in a way that’s more like the Place Google Docs Documents dialog.
Enables Export to Google Docs… for already-linked stories.
Changes the Export to Google Docs dialog to use the current document’s title as its default name instead of always using “Untitled document.”
Fixes the Export to Google Docs dialog to display with the last-used folder already selected.
Fixes a problem where switching user accounts from the Export to Google Docs dialog would result in a “no active login” error.
Adds support for Books and a Set Import Options entry to the Book panel’s menu so that common Place from Google Docs settings (like style mapping) can be shared by all chapters (documents) in that book.