A pattern derived from repeating unit cells each derived from part of a mosaic in paint.net. The starting point for the mosaic was a picture of some prawns!
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
This is the remix of "Tileable Wave Pattern 2" uploaded by "Arvin61r58".Thanks.I added a wire-mesh fence seamless pattern as a lower layer.
Source Yamachem
This one is amazing, truly original. Go use it!
Source Viahorizon
Just like your old suit, all striped and smooth.
Source Alex Berkowitz
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Colour version of the original seamless pattern.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
A light background pattern with diagonal stripes. Here's a simple light striped background for you.
Source V. Hartikainen
Same classic 45-degree pattern, dark version.
Source Luke McDonald
A seamless web texture of "green stone".
Source V. Hartikainen
Zero CC bark from fur tree tileable texture, photographed and made by me. CC0
Source Sojan Janso
This pattern comes in orange, and it looks as if it is "made of glass".
Source V. Hartikainen