A seamlessly tile-able grunge background image.
Source V. Hartikainen
Prismatic Geometric Pattern Background 2
Source GDJ
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
Seamless Green Tile Background
Source V. Hartikainen
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Remixed from a drawing in 'Works. Popular edition', John Ruskin, 1886.
Source Firkin
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
Oh yes, it happened! A pattern in full color.
Source Atle Mo
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
Original seamless pattern with an Inkscape filter.
Source Firkin
This background pattern looks like bamboo to me. Feel free to download it for your website (for your blog perhaps?).
Source V. Hartikainen
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
This is a remix of "geometrical pattern 01".
Source Yamachem
A blue gray fabric-like texture for websites. An yet another fabric-like texture. It has subtle vertical and diagonal stripes to it.
Source V. Hartikainen
From a drawing in 'Hyde Park from Domesday-Book to date', John Ashton, 1896.
Source Firkin
Prismatic Groovy Concentric Background 3
Source GDJ
Remixed from an image on Pixabay, the original having been uploaded by darkmoon1968.
Source Firkin
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen