A free background tile with a pattern of pink bump dots. This background tile is sweet! Moreover, it's designed for use as website backgrounds.
Source V. Hartikainen
Zero CC tileable hard cover cells book texture, 4k, scanned and made by me. CC0
Source Sojan Janso
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
A brown seamless wood texture in a form of stripe pattern. The result has turned out pretty well, in my opinion.
Source V. Hartikainen
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
Tile available in Inkscape using shift-alt-i on the selected rectangle
Source Firkin
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
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Element of beach pattern with background.
Source Rones
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Sometimes simple really is what you need, and this could fit you well.
Source Factorio.us Collective
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin