Platforma - Wireframe library of layouts and UI elements
SnapUp - Wireframe faster / create amazing user interfaces
Vireflow - A responsive wireframe kit for Webflow
Balsamiq - Balsamiq. Rapid, effective and fun wireframing software.
Blueprints app - Blueprints web wireframing tool - choose the blocks, get a website!
UXpin - Design is really about solving problems. UXPin is the UX Design Platform that gets that right.