From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Black And White Floral Pattern Background from PDP.
Source GDJ
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
Plywood Web Background background image for use in web design.
Source V. Hartikainen
There are many carbon patterns, but this one is tiny.
Source Designova
A comeback for you: the popular Escheresque, now in black.
Source Patten
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-yellow.
Source Yamachem
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
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
A new take on the black linen pattern. Softer this time.
Source Atle Mo