Abstract Ellipses Background Grayscale
Source GDJ
Black version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
From a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
Source Firkin
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Derived from an image that was uploaded to Pixabay by darkmoon1968
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Seamless Olive Green Web Background Image
Source V. Hartikainen
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
A repeatable image with dark background and metal grid pattern.
Source V. Hartikainen
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
Have you wondered about how it feels to be buried alive? Here is the pattern for it.
Source Hendrik Lammers
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.
Source V. Hartikainen