To get the repeating unit, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Seamless SVG vector and JPG backgrounds with faded diagonal stripes. The colors are editable.
Source V. Hartikainen
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
A seamless tessellation pattern. To get the tile this is formed from, select the pattern in Inkscape and use shift+alt+i.
Source Firkin
This reminds me of Game Cube. A nice light 3D cube pattern.
Source Sander Ottens
A white version of the very popular linen pattern.
Source Ant Ekşiler
A series of 5 patterns. That’s what the P stands for, if you didn’t guess it.
Source Dima Shiper
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Abstract Arbitrary Geometric Background derived from an image on Pixabay.
Source GDJ
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
To get the tile this is made up from select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
The image depicts a seamless pattern of a tortoise in tortoiseshell (hexagon).
Source Yamachem
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
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
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Real snow that tiles, not easy. This is not perfect, but an attempt.
Source Atle Mo
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
"Beige Stone", Tileable Texture.
Source V. Hartikainen
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen