Teampaper Snap - Take a snapshot, highlight key areas and share feedback
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Epic Pen - A windows tool for drawing over your desktop and applications
Inspect by InVision - A magical new design to development workflow from InVision
ppInk - a fork from gInk, with extra features (shape drawings, text,...)
Paste by FiftyThree - Show your work. Paste is a new presentation tool for Slack.