Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
Prismatic Abstract Geometric Background 5
Source GDJ
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
A free web background image with a seamless concrete-like texture and an Indian-red color.
Source V. Hartikainen
A background pattern with green vertical stripes. A new striped background pattern. This time a green one.
Source V. Hartikainen
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Tiny, tiny 3D cubes. Reminds me of the good old pattern from k10k.
Source Etienne Rallion
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
This background texture resembles stone. It may be used as a background on web pages or on some of their html elements (header, borders, menu bar, etc.). Just modify it for your needs.
Source V. Hartikainen
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Abstract Tiled Background Extended 12
Source GDJ
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
A seamless pattern formed from miutopia's cakes on a tablecloth.
Source Firkin
Remixed from a drawing in 'Prehistoric Man: researches into the origin of civilisation in the old and the new world', Daniel Wilson, 1876.
Source Firkin