Patterninja - Create patterns online
Subtle Patterns - Free textures for your next web project.
SVGeez - SVGeez is a platform that offers many CSS SVG backgrounds and lets you customize and download them for free.
SVG Stripe Generator - SVG Stripe Generator is an easy-to-use tool that enables you to create unlimited stripes and then download them to the device.
Hero Patterns - A collection of repeatable SVG background patterns
Doodad.dev's Pattern Generator - A free tool for creating unique, royalty-free, repeatable patterns.