A few backs the continual innovative team at Zoho announed the integration of Google Gears into the Zoho Writer web app. Zoho Writer is analogous to Google Docs and similar online word processing applications. The first cut had offline viewing facility alone. However, this release pushes the online word processing space ahead as it allows for offline editing.
Here’s a video from Zoho explaining more details:
http://zoho.com/zohowriter-zoho/zohowriter-zoho.html