Remixed from a drawing in 'Kulturgeschichte der Deutschen im Mittelalter' Franz von Loeher, 1891. The unit tile can be had by selecting the rectangle in Inkscape and using shift-alt-i
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
This is a more minute version of "fishnet 01".The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
This was submitted in a beige color, hence the name. Now it’s a gray paper pattern.
Source Konstantin Ivanov
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Prismatic Curved Diamond Pattern No Background
Source GDJ
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Colour version of the original pattern inspired by the front cover of 'Old and New Paris', Henry Edwards, 1894.
Source Firkin
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Like the name suggests, this background image consists of a pattern of dark bricks. It may be an option for you, if you are looking for something that looks like a brick wall for use as a background on web pages. It's not a masterpiece, but looks pretty nice when is tiled.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Tiny circle waves, almost like the ocean.
Source Sagive
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Can never have too many knitting patterns, especially as nice as this.
Source Victoria Spahn
Background formed from the original with an emboss effect.
Source Firkin