A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Old China with a modern twist, take two.
Source Adam Charlts
From a drawing in 'Two Women in the Klondike', Mary Hitchcock, 1899.
Source Firkin
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Prismatic Triangular Background Design Mark II 5
Source GDJ
Seamless Olive Green Web Background Image
Source V. Hartikainen
Abstract Tiled Background Extended 8
Source GDJ
Subtle scratches on a light gray background.
Source Andrey Ovcharov
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
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
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
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
From a design found in 'History of the Virginia Company of London; with letters to and from the first Colony, never before printed', Edward Neill, 1869.
Source Firkin
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Psychedelic Geometric Background No Black
Source GDJ
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
From a drawing in 'Les Chroniqueurs de l'Histoire de France depuis les origines jusqu'au XVIe siècle', Henriette Witt, 1884.
Source Firkin
Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin