Project Ares Open Beta (IDE for writing Mojo apps for WebOS)
pdnblog.palm.com
pdnblog.palm.com
More importantly it's a web app, so your tools are always up-to-date. The moment that Palm releases a new SDK or device, it'll be available via Ares.
I've been playing with it during the Alpha period, and I've been really impressed by the speed of development. New functionality and bugfixes have been pushed regularly, and the Palm developers have been extremely responsive to bug reports and feature requests. They've been iterating incredibly rapidly, which bodes well for the future.
FTA, it looks like the UI is based on bespin which uses canvas. I tried on FF 3 and Opera 10. Could that be a problem
Ares has been tested on:
* OSX: Safari 4.0+, Firefox 3.5+
* Windows: Chrome 3, 4, Firefox 3.5+, Safari 4.0+
* Linux: Firefox 3.5+