Geometric triangles seem to be quite hot these days.
Source Pixeden
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
Same as the black version, but now in shades of gray. Very subtle and fine grained.
Source Atle Mo
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen
Remixed from a drawing in 'The Canadian horticulturist', 1892
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. Version with black background.
Source Firkin
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Dark, square, clean and tidy. What more can you ask for?
Source Jaromír Kavan
From a drawing in 'Az Osztrák-Magyar Monarchia irásban és képben', 1885.
Source Firkin
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Alternative colour scheme. Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A repeating gloomy background image. This one consists of a pattern of black chains layered on top of a dark textured background.
Source V. Hartikainen
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
The image depicts a seamless pattern of the design which includes a stylized lotus and a stylized crane.I referred to the original image in a book which is into public domain.
Source Yamachem
A floral background formed from numerous clones of flower 117.
Source Firkin
Adapted heavily from a JPG that was uploaded to Pixabay by Viscious-Speed.
Source Firkin
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A dark background pattern/texture of a dimpled metal plate.
Source V. Hartikainen