Same as Silver Scales, but in black. Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Colourful background achieved with gradient fills.
Source Firkin
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
f you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Feel free to download this "Dark Wood" background texture for your web site. The background tiles seamlessly!
Source V. Hartikainen
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
One more brick pattern. A bit more depth to this one.
Source Benjamin Ward
A nice looking light gray background pattern with diagonal stripes.
Source V. Hartikainen
A green background pattern with warped vertical stripes and a grunge look.
Source V. Hartikainen
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin