Storydoc - Easily generate interactive decks and presentations that increase lead engagement and conversion
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Feedback by Pixelic - Painless design feedback and version control.
Sketch - Professional digital design for Mac.
Loops Feedback - Feedback on design ideas in minutes via 110m+ people
Affinity Designer - Professional creative software, exclusively for Mac.