One more from Badhon, sharp horizontal lines making an embossed paper feeling.
Source Badhon Ebrahim
Colour version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
This light yellow background pattern consists of an irregular pattern of spots. Here's a light background pattern with yellowish tint.
Source V. Hartikainen
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
This was formed by distorting an image of a background on Pixabay.
Source Firkin
This seamless background image should look nice on websites. It has a dark blue gray texture with vertical stripes, it tiles seamlessly and, like all of the background images here, it's free. So, if you like it, take it!
Source V. Hartikainen
A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
A comeback for you: the popular Escheresque, now in black.
Source Patten
From a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
A repeating background with dark brown stone-like texture and abstract pattern that looks like tree trunks.
Source V. Hartikainen
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
This seamless web background texture looks like gray stone. It's great for using as a background image on web pages, or on some of their elements. Anyway, I hope you will find use for it.
Source V. Hartikainen
Original minus the background
Source Firkin
A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper