Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
All good things come in threes, so I give you the third in my little concrete wall series.
Source Atle Mo
A seamless texture of an abstract wall colored in shades of light orange brown.
Source V. Hartikainen
This is the remix of "blue wave-seigaiha".The image depicts a seamless pattern of the front upper part of Japanese five yen coin which is used currently.This design represents a rice with ripe golden ears.
Source Yamachem
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
The image is a seamless pattern of a fishnet.
Source Yamachem
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
White handmade paper pattern with small bumps.
Source Marquis
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Subtle scratches on a light gray background.
Source Andrey Ovcharov
A bit like smudged paint or some sort of steel, here is scribble light.
Source Tegan Male
This could be a hippy vintage wallpaper.
Source Tileable Patterns
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless background texture of old cardboard.
Source V. Hartikainen
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin