Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Prismatic Polka Dots Mark II 2 No Background
Source GDJ
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
A classic dark tile for a bit of vintage darkness.
Source Listvetra
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem
The original enhanced with some gradients.
Source Firkin
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
A seamless texture of worn out "cardboard".
Source V. Hartikainen
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A seamless pattern with a unit cell drawn as a bitmap in Paint.net and vectorized in Vector Magic.
Source Firkin
A repeating background with dark brown stone-like texture and abstract pattern that looks like tree trunks.
Source V. Hartikainen
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Pattern #100! A black classic knit-looking pattern.
Source Factorio.us Collective
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen