A seamless pattern based on a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
Inspired by a drawing seen in 'City of Liverpool', James Picton, 1883.
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
More tactile goodness. This time in the form of some rough cloth.
Source Bartosz Kaszubowski
An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
This one has rusty dark brown texture.
Source V. Hartikainen
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
Prismatic Groovy Concentric Background 2
Source GDJ
Hey, you never know when you’ll need a bird pattern, right?
Source Pete Fecteau
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen
Recreated from a pattern found in 'Az Osztrák-Magyar Monarchia irásban és képben', 1882. To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
ZeroCC tileable stone texture, edited from pixabay, CC0
Source Sojan Janso
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Prismatic Geometric Pattern Background No Black
Source GDJ
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Abstract Geometric Monochrome Pattern Prismatic No Background
Source GDJ