For nearly a year, I've been working on a tool for indie board and card game developers to easily create components for printing with on-demand publishers like The Game Crafter. I've recently released v1.0, completely free and open source. I'd love to get some feedback on bug issues, usability, and new features.
https://bitbucket.org/mattsinger/card-editor
EDIT: I have an email set up specifically for questions and feedback: cardeditor.feedback@gmail.com
I've just released v1.1.0, which improves the preview display, adds some user settings, and includes a few other UI tweaks and improvements. Feel free to send comments, questions, or bug reports directly to me, and I will likely set up an email account specifically for them soon.