This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
Number 2 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Formed by distorting the inside front cover of 'Diversæ insectarum volatilium : icones ad vivum accuratissmè depictæ per celeberrimum pictorem', Jacob Hoefnagel, 1630.
Source Firkin
By popular request, an outline version of the pentagon pattern.
Source Atle Mo
The original enhanced with one of Inkscapes's filters.
Source Firkin
Greyscale version of a pattern that came out of playing with the 'light rays' plug-in for Paint.net
Source Firkin
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
Background formed from the original with an emboss effect
Source GDJ
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
Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
A seamless texture of worn out "cardboard".
Source V. Hartikainen
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin