A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
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
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
A criss-cross pattern similar to one I saw mown into a sports field.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
A textured blue background pattern with vertical stripes.
Source V. Hartikainen
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
Black And White Floral Pattern Background from PDP.
Source GDJ
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Prismatic Groovy Concentric Background 4 No Black
Source GDJ
Run a restaurant blog? Here you go. Done.
Source Andrijana Jarnjak
This one needs to be used in small areas; you can see it repeat.
Source Luca
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From an image on opengameart.org shared by rubberduck.
Source Firkin
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Prismatic Groovy Concentric Background No Black
Source GDJ
Prismatic Abstract Line Art Pattern Background
Source GDJ