Looks like an old rug or a computer chip.
Source Patutin Sergey
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
As the original image 's page size is too large for its image size, I remixed it.
Source Yamachem
Seamless Green Tile Background
Source V. Hartikainen
This one needs to be used in small areas; you can see it repeat.
Source Luca
Oh yes, it happened! A pattern in full color.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Retro Circles Background 4 No Black
Source GDJ
Here's a quite bright pink background pattern for use on websites. It doesn't look like a real fur, but it definitely resembles one.
Source V. Hartikainen
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
A version without colours blended together to give a different look.
Source Firkin
Square design drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
Derived from elements found in a floral ornament drawing on Pixabay.
Source Firkin