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
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A pattern drawn in Paint.net and vectorized in Inkscape.
Source Firkin
You were craving more leather, so I whipped this up by scanning a leather jacket.
Source Atle Mo
Everyone needs some stardust. Sprinkle it on your next project.
Source Atle Mo
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
The following free background pattern has glossy diagonal stripes as a texture to it, and it's colored in a light blue gray color. This background pattern is suitable for using in web design or any other graphic design projects. This applies to all background patterns here.
Source V. Hartikainen
The image is a design of blue glass.How about using it as background image?
Source Yamachem
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
This metal background pattern resembles a metal plate with rivets. Solid rivets on a metal plate.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Prismatic Polka Dots Mark II No Background
Source GDJ
A seamless paper background colored in pale yellow.
Source V. Hartikainen
Prismatic Polyskelion Pattern No Background
Source GDJ
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Just the symbols of the signs of the zodiac distributed in a chequer board-like pattern
Source Firkin
Used the 6th circle pattern designed by Viscious-Speed to create a print that can be used for card making or scrapbooking. Save as a PDF file for the best printing option.
Source Lovinglf
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Inspired by the B&O Play, I had to make this pattern.
Source Atle Mo
Greyscale version of a pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
From a drawing in 'A Guide to the Guildhall of the City of London', John Baddeley, 1898.
Source Firkin