Anima App - Design, get feedback, convert to code, publish, iterate.
SVG Backgrounds - Customize, scalable backgrounds and patterns for free
Sketch Repo - Collection of resources for anyone who uses Sketch
Get waves - A simple web app to generate svg waves, unique every time
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Svg Wave - A tiny, customizable svg wave generators for UI Designs.