I skipped number 3, because it wasn’t all that great. Sorry.
Source Dima Shiper
Remixed from a JPG that was uploaded to Pixabay by theasad121
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Lovely light gray floral motif with some subtle shades.
Source GraphicsWall
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A seamless background drawn in Paint.net and vectorised with Vector Magic. The starting point was a photograph of drinking straws from Pixabay.
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
Abstract Tiled Background Extended 8
Source GDJ
This is indeed a bit strange, but here’s to the crazy ones!
Source Christopher Buecheler
Abstract Ellipses Background Grayscale
Source GDJ
A nice and simple gray stucco material. Great on its own, or as a base for a new pattern.
Source Bartosz Kaszubowski
Prismatic Groovy Concentric Background 5
Source GDJ
Here is a new seamless wood texture for using as blog or website backgrounds.
Source V. Hartikainen
Alternative colour scheme for the original floral pattern.
Source Firkin
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Prismatic Geometric Pattern Background No Black
Source GDJ
Number 1 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin