Floral patterns will never go out of style, so enjoy this one.
Source Lasma
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
New paper pattern with a slightly organic feel to it, using some thin threads.
Source Atle Mo
Pattern formed from simple shapes. Black version.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'At home', J. Sowerby, J. Crane and T. Frederick, 1881.
Source Firkin
This one takes you back to math class. Classic mathematic board underlay.
Source Josh Green
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
From a drawing in 'Gately's World's Progress', Charles Beale, 1886.
Source Firkin
Love the style on this one, very fresh. Diagonal diamond pattern. Get it?
Source INS
Seamless Green Tile Background
Source V. Hartikainen
Seamless Prismatic Geometric Pattern With Background
Source GDJ
The name is totally random, but hey, it sounds good.
Source Atle Mo
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
Source V. Hartikainen
A comeback for you: the popular Escheresque, now in black.
Source Patten
It was called Navy Blue, but I made it dark. You know, the way I like it.
Source Ethan Hamilton
Prismatic Curved Diamond Pattern No Background
Source GDJ
Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
A seamless gray background texture suitable for use on websites. To me, it has the look of stone. Feel free to modify it to meet your needs (by making it a bit lighter or darker, for example).
Source V. Hartikainen