SteamAlerts - Track prices and receive alerts when Steam games go on sale
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
SnapUp - Wireframe faster / create amazing user interfaces
Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
PriceCute - Keep up with your competition's pricing on Amazon
Invision - Prototyping and collaboration for design teams