Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Here I have tried to create something that would look like maple wood. Not sure how well it's turned out, but at least it looks like wood.
Source V. Hartikainen
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
A black tile-able background with paper-like texture.
Source V. Hartikainen
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Here's a brown background pattern with subtle stripes. I hope you'll like the color. If not, feel free to change it using an image editor, if you know how of course. Personally, I'm using GIMP to create these backgrounds.
Source V. Hartikainen
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
Prismatic Abstract Background Design No Black
Source GDJ
Here's a new gray "fabric" pattern. Use it as backgrounds for websites or for other purposes.
Source V. Hartikainen
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
A pattern derived from part of a fractal rendering in Paint.net.
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin