Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Here's a camo print with more tan and less green, such as might be used in a desert scenario. This is tileable, so it can be used as a wallpaper or background.
Source Eady
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
This background pattern contains worn out colorful stripes as a texture.
Source V. Hartikainen
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin
Nothing like a clean set of bed sheets, huh?
Source Badhon Ebrahim
A seamless pattern based on a rectangular tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
From a drawing in 'The Quiver of Love', Walter Crane, 1876
Source Firkin
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Remixed from a raster on Pixabay that was uploaded by ArtsyBee.
Source Firkin
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein