Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
Zeplin - Collaboration app for UI designers & frontend developers
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Mightytext - Send & Receive SMS Text Messages from your computer. Sync'd with your Android #
Sketch + InVision - Design prototyping, collaboration & workflow for Sketch
ActiveWords - Auto correct on steroids