Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Colourful background achieved with gradient fills.
Source Firkin
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
The image depicts a seamless pattern of a fishnet with a plenty of fish.It may be a lucky charm for fishermen.
Source Yamachem
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
Background Wall, Art Abstract, Blue Well & CC0 texture.
Source Ractapopulous
Here's an yet another seamless note paper texture for use as a background on websites.
Source V. Hartikainen
A free pink background pattern.
Source V. Hartikainen
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
A seamless pattern of "sewn stripes" colored in light gray.
Source V. Hartikainen
A comeback for you: the popular Escheresque, now in black.
Source Patten
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
With a name this awesome, how can I go wrong?
Source Nikolay Boltachev
Prismatic Snowflakes Pattern No Background
Source GDJ
"Beige Stone", Tileable Texture.
Source V. Hartikainen
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Alternative colour scheme.
Source Firkin
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
A monochrome pattern from a tile that can be had by selecting the rectangle in Inkscaope and using shift+alt+i
Source Firkin