Feederoso is a project mainly written in ActionScript, it's free.
Playbook Google Reader Client
This is a Google Reader client for Blackberry Playbook.
Download Playbook Simulator and Playbook SDK on Blackberry Developer website.
Flex Hero SDK (4.5.0)
${Adobe Flash Builder Burrito Path}/sdks/blackberry-tablet-sdk-1.0.1/frameworks/libs/air/qnx-air.swc
${Adobe Flash Builder Burrito Path}/sdks/blackberry-tablet-sdk-1.0.1/frameworks/libs/qnx-screen/
${Adobe Flash Builder Burrito Path}/sdks/blackberry-tablet-sdk-1.0.1/frameworks/libs/blackberry/
We are using PureMVC pattern.