NOTE: Dojo Offline is no longer supported after Dojo 1.3

Dojo Offline is an open-source toolkit that makes it easy to create offline web applications. It sits on top of Google Gears, a plugin from Google that helps extend web browsers with new functionality. Dojo Offline makes working with Google Gears easier; extends it with important functionality; creates a higher-level API than Google Gears provides; and exposes developer productivity features. In particular, Dojo Offline provides the following functionality:

• An offline widget that you can easily embed in your web page with just a few lines of code, automatically providing the user with network feedback, sync messages, offline instructions, and more
• A sync framework to help you store actions done while offline and sync them with a server once back on the network
• Automatic network and application-availability detection to determine when your application is on- or off-line so that you can take appropriate action
• A slurp() method that automatically scans the page and figures out all the resources that you need offline, including images, stylesheets, scripts, etc.; this is much easier than having to manually maintain which resources should be available offline, especially during development.
• Dojo Storage, an easy to use hashtable abstraction for storing offline data for when you don't need the heaviness of Google Gear's SQL abstraction; under the covers Dojo Storage saves its data into Google Gears
• Dojo SQL, an easy to use SQL layer that executes SQL statements and returns them as ordinary JavaScript objects
• New ENCRYPT() and DECRYPT() SQL keywords that you can mix in when using Dojo SQL, to get transparent cryptography for columns of data. Cryptography is done on a Google Worker Pool thread, so that the browser UI is responsive.
• Integration with the rest of Dojo, such as the Dojo Event system

Dojo Offline is built to work with the 1.0 and newer releases of Dojo, and will not work with versions of Dojo prior to 0.9.

Who Created Dojo Offline?

Dojo Offline is brought to you by Dojo, SitePen, and Brad Neuberg.

News

• December 18th, 2007 - The Moxie offline demo is temporarily not working; my web hosting provider automatically upgraded a slew of applications, including MySQL, which temporarily broke things. I'll try to fix things soon.
• September 23rd, 2007 - Updated download link to point to latest release of Dojo. Download it now.
• July 12, 2007 - New small release of Dojo Offline that speeds up syncing and improves sync reliability.
• July 6th, 2007 - New beta version of Dojo Offline ported to run on Google Gears and Dojo 0.9 released. Read the tutorial and then download the SDK.
• May 30th, 2007 - Google, Dojo, and SitePen announce porting effort to move the Dojo Offline APIs on top of Google Gears. The current download is using the older Dojo Offline runtime, which we will be deprecating moving into the future. The ported Dojo Offline will be available in two weeks.
• April 23rd, 2007 - The first beta of Dojo Offline has been released!

Demos

Dojo Offline has three main demos, a Hello World example, a more complicated web-based editor named Moxie that includes an example server-side written in Java, and a demo of Dojo Offline's SQL cryptography. You can play with hosted versions of the Hello World example; a hosted version of the Moxie editor, and the SQL cryptography demo.

Documentation

The main documentation is a tutorial and reference work: "Creating Offline Web Applications With Dojo Offline".

Downloads

Dojo Offline is no longer included in Dojo. The code is only available through Dojo 1.3 download.

Older Downloads

Older versions of Dojo Offline are archived here.