Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
An alternative colour scheme to the original seamless pattern.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Continuing the geometric trend, here is one more.
Source Mike Warner
Abstract Tiled Background Extended 11
Source GDJ
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
This is the remix of an Openclipart clipart called "Maze" uploaded by "any_ono_mous".Thanks.This is a seamless pattern of a maze.
Source Yamachem
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
A comeback for you: the popular Escheresque, now in black.
Source Patten
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A free background pattern with abstract green tiles.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
From an image on opengameart.org shared by rubberduck.
Source Firkin
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman