A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
Clean and crisp lines all over the place. Wrap it up with this one.
Source Dax Kieran
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
White circles connecting on a light gray background.
Source Mark Collins
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
I love the movie Pineapple Express, and I’m also liking this Pineapple right here.
Source Audee Mirza
Remixed from a JPG that was uploaded to Pixabay by Osckar
Source Firkin
The tile for this is based on a repeating unit close to a design on Pixabay. It can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Looks like an old rug or a computer chip.
Source Patutin Sergey
A version without colours blended together to give a different look.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Prismatic Hexagonalism Pattern No Background
Source GDJ
An attempt for cleaning up the original image in a few steps.
Source Lazur URH
Prismatic Hypnotic Pattern No Background
Source GDJ
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
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