From a drawing in 'Prose and Verse ', William Linton, 1836.
Source Firkin
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This is the remix of "plant pattern 02".I changed the object color to white and the BG to purple.The image a seamless pattern derived from a weed which I can't identify.The original weed image is from here:jp.pinterest.com/pin/500744052301423641/
Source Yamachem
8 by 8 pixels, and just what the title says.
Source pixilated
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Original minus the background
Source Firkin
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Prepared mostly as a raster in Paint.net and vectorised.
Source Firkin
Colorful Floral Background 3 No Black
Source GDJ
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ