One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
This is a hot one. Small, sharp and unique.
Source GraphicsWall
8 by 8 pixels, and just what the title says.
Source pixilated
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Sort of reminds me of those old house wallpapers.
Source Tish
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin