Neat little photography icon pattern.
Source Hossam Elbialy
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
One more sharp little tile for you. Subtle circles this time.
Source Blunia
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
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
Prismatic Abstract Line Art Pattern Background
Source GDJ
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Prismatic Abstract Background Design No Black
Source GDJ
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
CC0 and seamless wellington boot pattern.
Source SliverKnight
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A subtle shadowed checkered pattern. Increase the lightness for even more subtle sexiness.
Source Josh Green
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
A bit of scratched up grayness. Always good.
Source Dmitry
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
Abstract Tiled Background Extended 6
Source GDJ