Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Alternative colour scheme. 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
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
A bit simplified version. Although it could be edited out to be simpler. Anyway, this time the tiling is converted to a pattern fill -which is using clipping for the tile's edges.
Source Lazur URH
From a drawing in 'Danmarks Riges Historie af J. Steenstrup, Kr. Erslev, A. Heise, V. Mollerup, J. A. Fridericia, E. Holm, A. D. Jørgensen', 1897.
Source Firkin
Pattern formed from simple shapes. Black version.
Source Firkin
Awesome name, great pattern. Who does not love space?
Source Nick Batchelor
The classic subtle pattern. Sort of wall/brick looking. Or moon-looking?
Source Joel Klein
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
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
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Remixed from a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
No relation to the band, but damn it’s subtle!
Source Thomas Myrman
Zero CC tileable brick texture, photographed and made by me. CC0
Source Sojan Janso
The name is totally random, but hey, it sounds good.
Source Atle Mo
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
A bit strange this one, but nice at the same time.
Source Diogo Silva