[scott_karana]

If you're not interested in this because it's SaaS, check out BBC's Wraith instead:

http://responsivenews.co.uk/post/56884056177/wraith

[michaelstewart]

Wraith is a cool open source project that we played around with a bunch before starting Diffd. This is roughly what the same diff of Stripe as shown in our demo will look like with Wraith: http://www.diffd.com/imagemagick_compare.png

[hatsix]

If you're not interested in Wraith because you want something that non-programmers can use, you can check out Scylla:

http://getscylla.com/

(disclaimer: I wrote it)