From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Prismatic Groovy Concentric Background 5 No Black
Source GDJ
Prismatic Curved Diamond Pattern No Background
Source GDJ
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Prismatic Geometric Pattern Background 2
Source GDJ
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
Pattern formed from simple shapes. Black version.
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
Remixed from an image that was uploaded to Pixabay by Pixeline
Source Firkin
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova