Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
8 by 8 pixels, and just what the title says.
Source pixilated
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
A seamless pattern the starting point for which was a 'colour modulo' texture in Paint.net.
Source Firkin
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
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
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Textured Red Brown Plastic, Free Background Pattern. Although there's already enough plastic in our lives, let's bring it to the web too.)
Source V. Hartikainen
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Prismatic Abstract Background Design No Black
Source GDJ
From a drawing in 'Kingsdene', Maria Fetherstonehaugh, 1878.
Source Firkin
You don’t see many mid-tone patterns here, but this one is nice.
Source Joel Klein
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Prismatic Geometric Pattern Variation 2 With Background
Source GDJ