A white version of the very popular linen pattern.
Source Ant Ekşiler
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen
Sort of reminds me of those old house wallpapers.
Source Tish
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i.
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
Prismatic Polka Dots 3 No Background
Source GDJ
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
Tiny circle waves, almost like the ocean.
Source Sagive
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
This one is something special. I’d call it a flat pattern, too. Very well done, sir!
Source GetDiscount