A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
Inspired by a pattern found in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
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
Prismatic Basic Pattern 2 No Background
Source GDJ
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
Prismatic Abstract Line Art Pattern Background 2
Source GDJ
Another fairly simple design drawn in Paint.net and vectorized in Inkscape.
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Alternative colour scheme for the original floral pattern.
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
A criss-cross pattern similar to one I saw mown into a sports field.
Source Firkin
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
Prismatic Polyskelion Pattern No Background
Source GDJ
Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss