http://i.imgur.com/wSEKeVb.png
I originally built it for the Swagger Spec 15 months ago, as the first visual Swagger Editor. Let me know if you guys are interested in using something like this.
Notice it has the code side-by-side. Also, it scrolls to and highlights the section of the spec you're editing. Notice the dropdowns are aware of custom models (e.g. "User", "Order") in the documents and suggest them to make it easy to use.
We used SwaggerUI for rendering in the beginning but that was replaced with it's own renderer. I blogged about it here: http://azimi.me/2015/04/23/swagger-editor-talk.html
Interesting! Re: SwaggerUI, it already existed as CoffeeScript and Backbone.js.
I built "Swagger Editor" for Tony, the creator of Swagger, as a paid OSS project; the screenshot shows the Swagger Editor back in Apr 2014 before yours existed.
I notice that a month later, you created "Swagger Editor" using the same technologies I chose (Yeoman, AngularJS, Ace Editor, etc) and took over the name.
I imagine the people who shared the private repository, including your employer Apogee, saw how fast I made mine and wanted to do their own from scratch, but I don't know.
I just took a look at your slides, looks like you've worked on yours for a year since, and use AST to understand where errors are, nice.