SVG Backgrounds - Customize, scalable backgrounds and patterns for free
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
svg-grabber - A chrome chrome extension to grab SVG images from a site
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
SVG Artista - Little tool that helps you create SVG animations
Dotgrid - A simple vector illustration tool.