I got lots of simple apps or examples that are built using Fabric.js.
Can I use Fabric.js for making advanced applications? I want to check some apps and see it's performance so that I would confirm that Fabric.js can handle big apps too.
We built Fabric specifically to power design editor on Printio.ru. It's used by 1000+ visitors daily.
From other big sites there's easel.ly — visual themes creation tool. Also mywallsticker.de, scrollkit.com, and others.