Pibb is a GWT based web app that tries to combine the best features of IM, email, chat and message boards.

• Messages are delivered instantly, or can be retrieved later
• New threads are stored and searchable like email or bulletin board
• Start public channels about your favorite subjects
• Use private channels to communicate with groups or your social network
• Send private messages to your friends
• Pibb will notify you when you have new messages

It supports OpenID so I was able to try out the app using my AIM login, so no registration necessary. The interface looks really nice and so far has been pretty intuitive. I hope people check it out.

Sanjiv Jivan has released a new version of his library. The library integrates the Ext javascript framework with GWT.

The complete list of API changes from GWT-Ext 0.9 to 0.9.1 can be found here and a high level summary of the changes can be viewed here. As you can see, around 40 classes and 300 new methods have been added since the 0.9 release.

There is also a nice Showcase example that shows off the different components included in the library.

Unit testing is an important part of a programmer’s toolbox and GWT has support built in with its class. Andrew Glover has written up a nice article on IBM Developerworks on how to unit test your GWT Applications using it. He starts off with a simple GWT example and shows how to refactor it to make it easier to test. Then he describes how to write the test case and run it. It’s a very imformative article.