A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
A seamless texture of a rough concrete surface.
Source V. Hartikainen
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
A classic dark tile for a bit of vintage darkness.
Source Listvetra
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
Inspired by a pattern found in 'A General History of Hampshire, or the County of Southampton, including the Isle of Wight', Bernard Woodwood, 1861
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
This background has abstract texture with some similarities to wood.
Source V. Hartikainen
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Original seamless pattern with an Inkscape filter.
Source Firkin
Prismatic Snowflakes Pattern No Background
Source GDJ
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Alternative colour scheme. 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
This was formed by distorting an image of a background on Pixabay.
Source Firkin