I am not sure I understand the question. Do you mean you are just looking for a bug reporting system that handles binary attachments, or are you asking for the

I am not sure I understand the question. Do you mean you are just looking for a bug reporting system that handles binary attachments, or are you asking for the system to somehow grab the screenshot for them? If it's the former, bugzilla will do it, albeit you will need to customise it a bit. No ideas on the second.