The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
A white version of the very popular linen pattern.
Source Ant Ekşiler
Just to prove my point, here is a slightly modified dark version.
Source Atle Mo
This is so subtle you need to bring your magnifier!
Source Carlos Valdez
Seamless Background For Websites. It has a texture similar to cork-board.
Source V. Hartikainen
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
From a drawing in 'Bond Slaves. The story of a struggle.', Isabella Varley, 1893.
Source Firkin
Washi (和紙?) is a type of paper made in Japan. Here’s the pattern for you!
Source Carolynne
It’s a hole, in a pattern. On your website. Dig it!
Source Josh Green
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
A seamless web texture of "green stone".
Source V. Hartikainen
The image depicts a seamless pattern which was made using stripe-like things including borders.I used OCAL cliparts called "Blue Greek Key With Lines Border" uploaded by "GR8DAN" and "daisy border" uploaded by "johnny_automatic".Thanks.
Source Yamachem
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
A seamless pattern formed from cross 4. To get the original tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Did anyone say The Hoff? This pattern is in no way related to Baywatch.
Source Josh Green
A seamless pattern formed from a tile made from ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
You guessed it – looks a bit like cloth.
Source Peax Webdesign
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Looks like a technical drawing board: small squares forming a nice grid.
Source We Are Pixel8
In the spirit of WWDC 2011, here is a dark iOS inspired linen pattern.
Source Atle Mo
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Alternative colour scheme for the original floral pattern.
Source Firkin
Redrawn based on a drawing in 'По Сѣверо-Западу Россіи' Konstantin Sluchevsky, 1897.
Source Firkin