Figma - Team-based interface design, Figma lets you collaborate on designs in real time.

Proto.io - Create fully-interactive high-fidelity prototypes in minutes that look and work exactly like your app should. Sign up for a free 15-day trial and get started.

GEES - GEES is an all-in-one AI design platform that is shaping a future where you can brainstorm, design, hand-off in one file — without changing any other tools.

SlickPlan - Slickplan is a suite of tools for planning any website project.

Sketch - Professional digital design for Mac.

Invision - Prototyping and collaboration for design teams