Jumifiwaman is a project mainly written in JAVASCRIPT and PYTHON, it's free.
Manager of firmware versions
README for JuMi Firmware Manager (jumifiwaman)
jumifiwaman currently is a project idea for managing firmware release information.
First source of information is its home page: http://github.com/kichkasch/jumifiwaman
Please browse the wiki there to find more information about the usage and the development of jumifiwaman.