"At Libre Graphics Meeting 2016 in London, Julien Deswaef presented a talk exploring how Git can aid graphic designers and other artists in their daily processes, as well as pinpointing Git's shortcomings for that user community."
Ezicompare is a simple to use file utility that allows you to compare two similar DWG/DXF files and highlight the difference.
"GitHub has been widely used as a platform for open-source collaboration for code, but is yet to be utilized for font creation and testing."
"Julien Deswaef presented a session on using distributed version control in design projects. […]". A nice wrap up by Nathan Willis of the Desgin With Git presentation at LGM13, Madrid
Two-column web-based git difftool
About "design stacks"
Package Desktop apps with Node.js inside
Presentation at Libre Graphics Meeting 2013