A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
Not strictly seamless in that opposite edges are not identical. But they do marry up to make an interesting pattern
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
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
You know I love paper patterns. Here is one from Stephen. Say thank you!
Source Stephen Gilbert
An abstract Background pattern of purple twisty patterns.
Source TikiGiki
Prismatic Curved Diamond Pattern 3 No Background
Source GDJ
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
Luxury pattern, looking like it came right out of Paris.
Source Daniel Beaton
Pattern formed from simple shapes. Black version.
Source Firkin
This texture looks like old leather. It should look great as a background on web pages.
Source V. Hartikainen
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
Black And White Floral Pattern Background Inverse
Source GDJ
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
This metal background pattern resembles a metal plate with rivets. Solid rivets on a metal plate.
Source V. Hartikainen
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
From a drawing in 'Chambéry à la fin du XIVe siècle', Timoleon Chapperon, 1863.
Source Firkin
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ