ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
The image depicts a seamless pattern made using a bird's face.
Source Yamachem
A dark brown fabric-like background texture with seamless pattern of winding stripes.
Source V. Hartikainen
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
It’s an egg, in the form of a pattern. This really is 2012.
Source Paul Phönixweiß
White circles connecting on a light gray background.
Source Mark Collins
A dark metal plate with an embossed grid pattern and a bit of rust. Here's a dark metal plate texture for use as a tiled background on web pages.
Source V. Hartikainen
From a drawing in 'In an Enchanted Island', William Mallock, 1892.
Source Firkin
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Prismatic Abstract Geometric Background 4
Source GDJ
Prismatic Curved Diamond Pattern 4 No Background
Source GDJ
Never out of fashion and so much hotter than the 45º everyone knows, here is a sweet 60º line pattern.
Source Atle Mo
This background image has seamless texture that resembles a surface of gray stone.
Source V. Hartikainen
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
I guess this one is inspired by an office. A dark office.
Source Andrés Rigo.
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
A seamless paper background colored in pale yellow.
Source V. Hartikainen
A new take on the black linen pattern. Softer this time.
Source Atle Mo
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Prismatic Floral Pattern 3 Variation 3 No Background
Source GDJ
Prismatic Triangular Background Design Mark II 5
Source GDJ