Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
This metal background pattern resembles a metal plate with rivets. Solid rivets on a metal plate.
Source V. Hartikainen
A light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
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
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-brown.
Source Yamachem
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin
Tiny circle waves, almost like the ocean.
Source Sagive
White handmade paper pattern with small bumps.
Source Marquis
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin