A free seamless background texture of "timber wall" (colored in dark brown).
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
An interesting dark spotted pattern at an angle.
Source Hendrik Lammers
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
A repeating background for websites with a texture of black groove stripes.
Source V. Hartikainen
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A black tile-able background with paper-like texture.
Source V. Hartikainen
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Alternative colour scheme for the original floral pattern.
Source Firkin