Want to hack on Checkbook? Have at it. Source code is available. Feel free to hack at it and do whatever with the code. These repositories are licensed under the Creative Commons - Attribution - Non-Commercial license.

webos mojo - https://bitbucket.org/GlitchTechScience/checkbook_mojo

enyo - https://bitbucket.org/GlitchTechScience/checkbook_enyo