A dark metallic background with a pattern of stamped dots. Here's a dark "metallic" background pattern for you.
Source V. Hartikainen
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
A new take on the black linen pattern. Softer this time.
Source Atle Mo
A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
A dark pattern made out of 3×3 circles and a 1px shadow. This works well as a carbon texture or background.
Source Atle Mo
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
A playful triangle pattern with different shades of gray.
Source Dimitrie Hoekstra
Prismatic Polyskelion Pattern No Background
Source GDJ
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
A repeating background with dark brown stone-like texture and abstract pattern that looks like tree trunks.
Source V. Hartikainen
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
Abstract Stars Geometric Pattern Prismatic No Background
Source GDJ
Plywood Web Background background image for use in web design.
Source V. Hartikainen
The rectangular tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Three shades of gray makes this pattern look like a small carbon fiber surface. Great readability even for small fonts.
Source Atle Mo
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
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin