A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
A yellow tiled background... Blurriness, bokeh effect and rectangles pattern in one mix.
Source V. Hartikainen
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Formed by heavily distorting part of a an image of a fish uploaded to Pixabay by GLady
Source Firkin
Prismatic Abstract Geometric Background 5
Source GDJ
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
Prismatic Hexagonalist Pattern No Background
Source GDJ
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
The name is totally random, but hey, it sounds good.
Source Atle Mo
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett