This one is quite simple in design, it consists of vertical stripes layered on top of a seamless texture.
Source V. Hartikainen
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
The texture of this background image has some similarities with leather, and it's colored in a dark brown color. So, if you are looking for a dark brown background image for your website, this may be an option for you.
Source V. Hartikainen
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
This background pattern contains worn out colorful stripes as a texture.
Source V. Hartikainen
Sometimes you just need the simplest thing.
Source Fabricio
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. Version with black background.
Source Firkin
The following repeating website background is colored in a blue gray color and resembles a concrete wall or something similar to it.
Source V. Hartikainen
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
Prismatic Abstract Background Design
Source GDJ
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
Classic vertical lines, in all its subtlety.
Source Cody L
A new take on the black linen pattern. Softer this time.
Source Atle Mo
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
To get the tile this is formed from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin