Sort of like the Photoshop transparent background, but better!
Source Alex Parker
A beautiful dark padded pattern, like an old classic sofa.
Source Chris Baldie
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Remixed from a PNG that was uploaded to Pixabay by VictorianLady
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
Abstract Ellipses Background Grayscale
Source GDJ
Zero CC tileable grass texture, photographed and made by me. CC0
Source Sojan Janso
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Dark, lines, noise, tactile. You get the drift.
Source Anatoli Nicolae
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
Prismatic Groovy Concentric Background
Source GDJ
An orange vertically striped background pattern. Feel free to download and use this orange background pattern, for example, on the web). It resembles a wallpaper with vertical stripes or something similar to it.
Source V. Hartikainen
Inspired by a pattern found in 'A General History of Hampshire, or the County of Southampton, including the Isle of Wight', Bernard Woodwood, 1861
Source Firkin
From a drawing in 'Handbook of the excursions proposed to be made by the Lincoln Diocesan Architectural Society, on the 27th and 28th of May, 1857', Edward Trollope, 1857.
Source Firkin
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
You know I’m a sucker for these. Well-crafted paper pattern.
Source Mihaela Hinayon