Re:Wraith – A screenshot comparison tool from the BBC
by gabrielrotbart on Thursday August 01, 2013 @08:49AM
(#6139859)
You're right. Although it is 'released' in a way, it has quite a few downloads on Rubygems even though I've never put it out there (HN posts etc).
You'll never be truly happy with the internals and, if you're like me, you'll be forever "1 final refactor, 1 extra tweak" away from perfection.