Tiny circle waves, almost like the ocean.
Source Sagive
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
From a drawing in 'From Snowdon to the Sea. Striking stories of North and South Wales', Marie Trevelyan, 1895.
Source Firkin
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
A seamless striped fabric-like texture colored in a dark reddish brown color.
Source V. Hartikainen
Number 5 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
ZeroCC tileable stone texture, edited from pixabay, CC0
Source Sojan Janso
The Grid. A digital frontier. I tried to picture clusters of information as they traveled through the computer.
Source Haris Šumić
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Green Background Pattern
Source V. Hartikainen
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Remixed from a JPG that was uploaded to Pixabay by susanlu4esm
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
Prismatic Abstract Geometric Background 2
Source GDJ
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
Heavily remixed from a drawing in 'Barbara Leybourne; a story of eighty years ago', Sarah Hamer, 1889.
Source Firkin
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard