A free black metallic background pattern. Here's a new pattern I made that looks metallic.
Source V. Hartikainen
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Prismatic Geometric Pattern Background No Black
Source GDJ
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
Remixed from a design on Pixabay. To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Simple wide squares with a small indent. Fits all.
Source Petr Šulc.
I have no idea how to describe this one, but it’s light and delicate.
Source JBasoo
An abstract texture of black metal pipes (seamless).
Source V. Hartikainen
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
A new take on the black linen pattern. Softer this time.
Source Atle Mo
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin