I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
The image is a seamless pattern of a fishnet.
Source Yamachem
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
This is the remix of an Openclipart clipart called "Maze" uploaded by "any_ono_mous".Thanks.This is a seamless pattern of a maze.
Source Yamachem
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Seamless pattern the basic tile for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
More leather, and this time it’s bigger! You know, in case you need that.
Source Elemis
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
White handmade paper pattern with small bumps.
Source Marquis
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Wasn't satisfied with the original's colouring. Too much component transfer and colormatrixes yet the results are lacking a bit. So this time it is a simple black to transparent fade, making it possible remixing easily once there will be other blending modes supported as well. Probably in inkscape 0.92.
Source Lazur URH
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Same classic 45-degree pattern, dark version.
Source Luke McDonald
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
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen