CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
A free tileable background colored in off-white (antique white) color.
Source V. Hartikainen
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
An aged paper background tile with smeared and pressed text.
Source V. Hartikainen
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
emixed from a JPG that was uploaded to Pixabay by Kyotime
Source Firkin
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Super subtle indeed, a medium gray pattern with tiny dots in a grid.
Source Designova
Formed by distorting an image on Pixabay that was uploaded by gustavorezende. To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Prismatic Abstract Background Design No Black
Source GDJ
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
Submitted in a cream color, but you know how I like it.
Source Devin Holmes
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova