Git Sketch Plugin - Version control for designers
Uizard - Design made easy – powered by AI
Anima App - Design, get feedback, convert to code, publish, iterate.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Marvel for Sketch - Sync, play and record prototypes in Sketch!
InVision Studio for UI Designers - Free video course on InVision Studio