Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless texture of worn out "cardboard".
Source V. Hartikainen
From an image on opengameart.org shared by rubberduck.
Source Firkin
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
This is a seamless pattern of regular hexagon which has a honeycomb structure.
Source Yamachem
The base gradient edited so now more details are rendered.
Source Lazur URH
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Horizontal and vertical lines on a light gray background.
Source Adam Anlauf
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
A seamless pattern of leopard skin. It should look nice as a background element on web pages.
Source V. Hartikainen
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
With a name like this, it has to be hot. Diagonal lines in light shades.
Source Isaac
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering