A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
A seamless pattern based on a tile that can be achieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A bit of scratched up grayness. Always good.
Source Dmitry
There are many carbon patterns, but this one is tiny.
Source Designova
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
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
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Classic 45-degree pattern, light version.
Source Luke McDonald
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
Light and tiny, just the way you like it.
Source Rohit Arun Rao
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
Zero CC tileable ground cracked, crackled, texture, made by me.
Source Sojan Janso
From a drawing in 'Uit de geschiedenis der Heilige Stede te Amsterdam', Yohannes Sterck, 1898.
Source Firkin
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
Here's a new gray "fabric" pattern. Use it as backgrounds for websites or for other purposes.
Source V. Hartikainen