Patterns
▣ SVG Backgrounds
https://www.svgbackgrounds.com/
Free SVG Backgrounds and Patterns
Enjoy this small sampling of our designs and patterns. All are customizable: change into your brand colors — some even shrink, spin, or shift. Each background is unique to SVGBackgrounds.com, so enjoy exploring before you easily export into your project.
▣ Pattern.css
Pattern.css is a CSS only library to fill your empty background with beautiful patterns.
▣ Trianglify.io
Trianglify.io is a tool wrote by Quinn Rohlf to generate low-poly backgrounds, textures, and vectors. It's based on an open-source library, Trianglify, which he also wrote.