A seamless pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i. Derived from a design in 'Storia del Palazzo Vecchio in Firenze', Aurelio Gotti, 1889.
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
Luxurious looking pattern (for a T-shirt maybe?) with a hint of green.
Source Simon Meek
Looks as if it's spray painted on the wall. You can be sure that this pattern will seamlessly fill your backgrounds on web pages.
Source V. Hartikainen
Tiny circle waves, almost like the ocean.
Source Sagive
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
From a drawing in 'Cowdray: the history of a great English House', Julia Roundell, 1884.
Source Firkin
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Nicely crafted paper pattern, although a bit on the large side (500x593px).
Source Blaq Annabiosis
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
A new take on the black linen pattern. Softer this time.
Source Atle Mo
As far as fabric patterns goes, this is quite crisp.
Source Heliodor Jalba
Sort of reminds me of those old house wallpapers.
Source Tish
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Used correctly, this could be nice. Used in a bad way, all hell will break loose.
Source Atle Mo
Inspired by a 1930s wallpaper pattern I saw on TV.
Source Firkin
The image depicts a pattern of regular hexagon.As I made to use it for myself,I want to others to use it.Speaking about the ratio of the image, height : width = 2 : √3(1.732...)Ridiculous to say,I realized later that this image is not honey comb pattern.I have to slide the second row.
Source Yamachem
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
A background tile for web with abstract repeating texture of dark "stone wall".
Source V. Hartikainen