A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A light brushed aluminum pattern for your pleasure.
Source Tim Ward
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This one is quite simple in design, it consists of vertical stripes layered on top of a seamless texture.
Source V. Hartikainen
This ladies and gentlemen, is texturetastic! Love it.
Source Adam Pickering
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
A free light orange brown wallpaper with vertical stripes designed for use as a tiled background on websites. An yet another background pattern with vertical stripes.
Source V. Hartikainen
We have some linen patterns here, but none that are stressed. Until now.
Source Jordan Pittman
White little knobs, coming in at 10x10px. Sweet!
Source Amos
One more in the line of patterns inspired by Japanese/Asian styles. Smooth.
Source Kim Ruddock
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
A seamless texture of worn out "cardboard".
Source V. Hartikainen
Prismatic Geometric Tessellation Pattern 3 No Background
Source GDJ
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Prismatic Isometric Cube Wireframe Pattern No Background
Source GDJ
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green