It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
This beige background pattern resembles a concrete wall with engravings or something similar to it.
Source V. Hartikainen
Remixed from a drawing in 'Очерки Русской Исторіи въ памятникахъ быта', Petr Polevoi, 1879.
Source Firkin
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
A pale yellow background pattern with vertical stripes. The stripes are partially faded. I think this background image turned out pretty well, especially those faded stripes.
Source V. Hartikainen
Prismatic Triangular Background Design Mark II 5
Source GDJ
Prismatic Polka Dots Mark II No Background
Source GDJ
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
This background pattern has futuristic look. So, maybe it could be used on websites or blogs dedicated to video games?!
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
The first pattern on here using opacity. Try it on a site with a colored background, or even using mixed colors.
Source Nathan Spady
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
A seamless pattern formed from a rectangular tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Basket Fibers, Basket Texture, Braid Background style CC0 texture.
Source 1A-Photoshop
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Looks like an old rug or a computer chip.
Source Patutin Sergey
The edges of all the red objects line up either vertically or horizontally, but it doesn't appear so. Made from a square tile that can be got by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Stefan is hard at work, this time with a funky pattern of squares.
Source Stefan Aleksić
More in the paper realm, this time with fibers.
Source Jorge Fuentes
One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Submitted as a black pattern, I made it light and a few steps more subtle.
Source Andy