- Definitely invision. We use this all the time for PH. Make the design public and share it out. After people comment on the design, we generally get together and work through everything said to make decisions on the feedback.InVision is gold. We use it internally for design reviews for our remote team but we've also used it to gather public feedback from the Product Hunt community (see here).
I love everything about InVision.
Since I started using it 3-4 years ago they improved so many things and added really useful features. They collaborate with so many top designers of the industry that they always know what we want. I really appreciate the effort, time and love they put into their products and it's always fun to use them.
The tools I use on a weekly basis are:
InVision (Webapp); Freehand; Craft; Designbetter.co
All my designers loves the service, but I am struggling to use it, I find its UI/UX uncomfortable and not obvious. The most terrible is a mobile version of the web-site, extremely slow.