A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
Prismatic Groovy Concentric Background 3
Source GDJ
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Like the name says, light and gray, with some small dots and circles.
Source Brenda Lay
Used in small doses, this could be a nice subtle pattern. Used on a large surface, it’s dirty!
Source Paul Reulat
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Not the most creative name, but it’s a good all-purpose light background.
Source Dmitry
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
The following orange background pattern resembles a honeycomb.
Source V. Hartikainen
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
This one looks like a cork panel. Feel free to use it as a tiled background on your blog or website.
Source V. Hartikainen
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin