Teampaper Snap - Take a snapshot, highlight key areas and share feedback
InVision Studio - The world’s most powerful screen design tool
Epic Pen - A windows tool for drawing over your desktop and applications
Finch for Windows - Make visual changes to any website. Immediately.
ppInk - a fork from gInk, with extra features (shape drawings, text,...)
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.