Beautiful dark noise pattern with some dust and grunge.
Source Vincent Klaiber
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Sharp pixel pattern, just like the good old days.
Source Paridhi
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
Prismatic Hexagonalism Pattern No Background
Source GDJ
Seamless pattern inspired by a drawing on Pixabay. To get the tile this is formed from, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Groovy Concentric Background 5
Source GDJ
A comeback for you: the popular Escheresque, now in black.
Source Patten
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on 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
Remixed from a PNG that was uploaded to Pixabay by gingertea
Source Firkin
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A pattern formed from repeated instances of corner decoration 8. To get the basic tile select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ