Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Prismatic Hypnotic Pattern 2 No Background
Source GDJ
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Black And White Floral Pattern Background from PDP.
Source GDJ
Looks a bit like concrete with subtle specks spread around the pattern.
Source Mladjan Antic
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
A pattern formed from a photograph of a 16th century ceramic tile.
Source Firkin
Background pattern originally a PNG drawn in Paint.net
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A seamless pattern created from a square tile. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
If you’re sick of the fancy 3D, grunge and noisy patterns, take a look at this flat 2D brick wall.
Source Listvetra
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Tweed is back in style – you heard it here first. Also, the @2X version here is great!
Source Simon Leo
No relation to the band, but damn it’s subtle!
Source Thomas Myrman