Joe Walker is planning to bake Dojo Offline/Gears into DWR, a popular Java/Ajax toolkit in the Java world.

http://www.infoq.com/news/2008/03/dwr_3.0

*Craig Wickesser for InfoQ:* What are some of the major features planned for version 3.0?

*Joe Walker:* I guess there are a number of features that will make a big difference. We hope to have transparent off-line support, so for a certain class of applications you should be able to use a DWR application while the network is offline, and have it replay your calls once the network returns. The log of server interactions should be storable in Google Gears or Dojo Offline for persistence too. The key being that the developer hardly needs to do anything to get this working. For example, InfoQ uses DWR. If we get it right, it should be easy for you to make it so that if the network dies while a user is writing a comment, then the comment doesn't get lost. When the network is next up, and the user visits InfoQ, the comment will be resent then. It's a cool feature, and using DWR it should come almost for free.