A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
Not the Rebel alliance, but a dark textured pattern.
Source Hendrik Lammers
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).
Source V. Hartikainen
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
A seamless pattern formed from miutopia's cakes on a tablecloth.
Source Firkin
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
A free seamless background image with abstract texture of green "curtain".
Source V. Hartikainen
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
Classic vertical lines, in all its subtlety.
Source Cody L
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
This ons is quite old school looking. Retro, even. I like it.
Source Arno Declercq
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
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
It looks very nice I think.
Source V. Hartikainen
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Prismatic Geometric Pattern Background 2 No Black
Source GDJ
A black tile-able background with paper-like texture.
Source V. Hartikainen
Heavily remixed from a drawing in 'Barbara Leybourne; a story of eighty years ago', Sarah Hamer, 1889.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ