Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
SteamAlerts - Track prices and receive alerts when Steam games go on sale
WING - A phone carrier that is actually nice to you.
SnapUp - Wireframe faster / create amazing user interfaces
Spectre.css - Lightweight, responsive and modern CSS framework for faster and extensible development.
PriceCute - Keep up with your competition's pricing on Amazon