Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The tile for this is based on a repeating unit close to a design on Pixabay. It can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
An alternative colour scheme to the original seamless pattern.
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
Prismatic Polka Dots 3 No Background
Source GDJ
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev