Haihaisoft PDF Reader - Haihaisoft PDF Reader is the name of a free to use PDF reader and printer that is extremely simple to launch.
Loops Feedback - Feedback on design ideas in minutes via 110m+ people
eXPert PDF Reader - eXPert PDF Reader is a free to use PDF reader and views for the Windows operating systems.
Storydoc - Easily generate interactive decks and presentations that increase lead engagement and conversion
Flipping PDF Reader - Replace the standard Adobe PDF Reader with the nice flip book. The Flipping PDF Reader allows to read PDF documents in user friendly interface with flipping book effect.
Feedback by Pixelic - Painless design feedback and version control.