Who is using what to prototype? I must have tried them all. What are your opinions?
If I had to list them they come in different categories:

* Graphic design: Illustrator, Photoshop, Sketch
* Actual coding: Swift, HTML/CSS/JS
* Semi coding aided by environment: Framer.js, Quartz composer+Origami
* WYSIWYG web tools: Pixate, ...
* Tying images together: Adobe Fireworks, Invisionapp, Marvel, Prott, Flinto (web)
* Animating: Tumult Hype, After Effects, Principle App, Flinto for Mac

Which one is the best depends on what I am designing but I keep coming back to Sketch and Illustrator, Invision for a quick image prototype and HTML/CSS for prototyping if it's a web app.

for fast ans simple prototyping: Principle

* Web (html/css/js): https://www.meteor.com/ + https://wrapbootstrap.com/theme/inspinia-responsive-admin-theme-WB0R5L90S makes a great combo to cover a a lot of full stack use cases. Great for protoytping and production.
* 2D/3D: Unity3D (C#) with ready made assets from asset store
* Graphics: Serif Draw Plus (does ai), EDraw Max, Paint.net
* Audio/Music: Audacity, Reaper, Live,

I start using Balsamiq, Axure and Invision. Then After effects and edge for animations.
Now with Prott and Principle we are all satisfied, the first one for simple prototyping and sharing, the second one for animations.

R.

At the moment, just Sketch! I rarely need to use Illustrator or Photoshop anymore for web work, unless I'm dealing with finicky assets.

I was up til 5am the other night trying to learn Principle, though. Definitely nifty. Interested in trying out Flinto soon as well.

Any thoughts on the upcoming Adobe project comet?

http://landing.adobe.com/en/na/products/creative-cloud/comet/229818-notifyme.html?

Carol

http://blogs.adobe.com/creativecloud/introducing-project-comet-a-new-tool-for-designing-and-prototyping-user-experiences/

"...with the quality and stability that you expect from Adobe"

BWAAAAAHAHAHAHAAHAHAHAHAHAHAHAHAHHAHHAAH

....breathe...

Here's my workflow:
Quick mockups - Keynote
More involved - proto.io
Might need some variables to be passed through the system - Axure

My general Go-to - iAd Producer. SUCH a hidden gem in the Apple toolset.
http://www.lindadong.com/blog/prototyping-with-iad-producer

Every now and then - Processing.js

Ryo your snark is palatable <3

Now using Sketch + Principle, both awesome. Will be making a presentation on prototyping apps at next Tokyo iOS Meetup.