A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
From a drawing in 'Handbook of the excursions proposed to be made by the Lincoln Diocesan Architectural Society, on the 27th and 28th of May, 1857', Edward Trollope, 1857.
Source Firkin
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
A seamless background colored in pale orange. It has a paper like texture with diagonal grid pattern.
Source V. Hartikainen
ZeroCC tileable beechwood wood texture, generated in Neo Texture Edit by me. CC0
Source Sojan Janso
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
A pattern derived from repeating unit cells each derived from part of a mosaic in paint.net. The starting point for the mosaic was a picture of some prawns!
Source Firkin
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
The following free background pattern has glossy diagonal stripes as a texture to it, and it's colored in a light blue gray color. This background pattern is suitable for using in web design or any other graphic design projects. This applies to all background patterns here.
Source V. Hartikainen
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ