Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
Remixed from an image on Pixabay uploaded by Prawny
Source Firkin
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
The image depicts meshed silhouettes of various things.The original image is an OCAL clipart called "Enter FOSSASIA 2016 #IoT T-shirt Design Contest" uploaded by "openclipart".Thanks.
Source Yamachem
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
Pattern formed from simple shapes. Black version.
Source Firkin
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim