Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
The name alone is awesome, but so is this sweet dark pattern.
Source Federica Pelzel
Fix and cc0 to get the tile this is based on.
Source SliverKnight
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Black brick wall pattern. Brick your site up!
Source Alex Parker
A seamless background pattern with a texture of wood planks. This wood background pattern has vertically arranged planks. You may try to rotate it 90°, to see how it will look like when the wood planks are arranged horizontally.
Source V. Hartikainen