Number 4 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Prismatic Hypnotic Pattern No Background
Source GDJ
The name is totally random, but hey, it sounds good.
Source Atle Mo
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A background pattern with a look of rough fabric.
Source V. Hartikainen
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A comeback for you: the popular Escheresque, now in black.
Source Patten
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Paper pattern with small dust particles and 45-degree strokes.
Source Atle Mo
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Greyscale version of a pattern that came out of playing with the 'slinky' plug-in for Paint.net
Source Firkin
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock