Developing with openlaszlo
If, like me, you're a Linux user and you are interested in developing Chumby applications without using any closed-source software (Flash, FlashDevelop, ...) which don't run under Linux anyway, this page might interest you.
I developed a communication application using Openlazlo. Openlazlo generates SWF files that can run on Chumby devices. Source files are XML that can be written with you preferred editor (vim, emacs, scite, gedit, kedit, ...).