Crossing lines with a subtle emboss effect on a dark background.
Source Stefan Aleksić
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Remixed from a raster on Pixabay, that was uploaded by ArtsyBee.
Source Firkin
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
Source V. Hartikainen
The following free background pattern has glossy diagonal stripes as a texture to it, and it's colored in a light blue gray color. This background pattern is suitable for using in web design or any other graphic design projects. This applies to all background patterns here.
Source V. Hartikainen
Sounds French. Some 3D square diagonals, that’s all you need to know.
Source Graphiste
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Coming in at 666x666px, this is an evil big pattern, but nice and soft at the same time.
Source Atle Mo
A very dark asfalt pattern based off of a photo taken with my iPhone.
Source Atle Mo
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
The image depicts an edo-era pattern called "same-komon" or "鮫小紋"which looks like a shark skin.The "same" in Japanese means shark in English.
Source Yamachem
White circles connecting on a light gray background.
Source Mark Collins
A light gray wall or floor (you decide) of concrete.
Source Atle Mo
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).
Source V. Hartikainen
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
One more updated pattern. Not really carbon fiber, but it’s the most popular pattern, so I’ll give you an extra choice.
Source Atle Mo
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i
Source Firkin