Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
This is so subtle: We’re talking 1% opacity. Get your squint on!
Source Atle Mo
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Colour version of the original pattern.
Source Firkin
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
Might not be super subtle, but quite original in its form.
Source Alex Smith
This is a remix of "flower seamless pattern".I rotated the original image by 90 degrees.This is a seamless pattern of flowers.These horizontal wavy lines are one of Edo patterns which is called "tatewaku or tachiwaku or 立湧" that represents uprising steam or vapor.
Source Yamachem
This one is amazing, truly original. Go use it!
Source Viahorizon
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Abstract Ellipses Background Grayscale
Source GDJ
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
A free black metallic background pattern. Here's a new pattern I made that looks metallic.
Source V. Hartikainen
Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
This one needs to be used in small areas; you can see it repeat.
Source Luca
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
More in the paper realm, this time with fibers.
Source Jorge Fuentes
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Seamless Dark Grunge Texture. Here's a new grunge texture for use as a background.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin