Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
White circles connecting on a light gray background.
Source Mark Collins
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
Small gradient crosses inside 45-degree boxes, or bigger crosses if you will.
Source Wassim
A colourful background drawn originally in paint.net and vectorised in Vector Magic.
Source Firkin
Alternative colour scheme for the original floral pattern.
Source Firkin
Nice little grid. Would work great as a base on top of some other patterns.
Source Arno Gregorian
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
Psychedelic Geometric Background No Black
Source GDJ
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
You guessed it – looks a bit like cloth.
Source Peax Webdesign
This light blue background pattern is quite pleasing to the eye, it consists of a tiny rough grid pattern, which is seamless by design. That's it, if you like the color, you can use this seamless pattern in a web design without making any further modifications to it.
Source V. Hartikainen
Subtle scratches on a light gray background.
Source Andrey Ovcharov
Number five from the same submitter, makes my job easy.
Source Dima Shiper
A seamless pattern drawn originally in Paint.net by distorting a slice of background pattern 116 and copying the resulting triangle numerous times.
Source Firkin
A simple but elegant classic. Every collection needs one of these.
Source Christopher Burton
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers