Continuing the geometric trend, here is one more.
Source Mike Warner
Zero CC tileable cork floor, photographed and made by me. CC0
Source Sojan Janso
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Super simple but very nice indeed. Gray with vertical stripes.
Source Merrin Macleod
Colour version of the original pattern.
Source Firkin
A brown metallic grid pattern layered on top of a dark fabric texture. It should look great when using as a tiled background on web pages, especially blogs.
Source V. Hartikainen
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Remixed from a drawing in 'A Child of the Age', Francis Adams, 1894.
Source Firkin
A nice and simple white rotated tile pattern.
Source Another One
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
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
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Not even 1kb, but very stylish. Gray thin lines.
Source Struck Axiom
A seamless texture of black leather. I think it will look best when used in headers, footers or sidebars.
Source V. Hartikainen