Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Your eyes can trip a bit from looking at this – use it wisely.
Source Michal Chovanec
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
You know you love wood patterns, so here’s one more.
Source Richard Tabor
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Prismatic Abstract Background Design
Source GDJ
A free seamless background texture that looks like a brown stone wall.
Source V. Hartikainen
From an image on opengameart.org shared by rubberduck.
Source Firkin
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
Abstract Tiled Background Extended 12
Source GDJ
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Zero CC tileable Crackled Cement (streaks) texture, photographed and made by me. CC0
Source Sojan Janso
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
A hint of orange color, and some crossed and embossed lines.
Source Adam Anlauf
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
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
From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski