A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
It’s okay to be square! A nice light gray pattern with random squares.
Source Waseem Dahman
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
This is a grid, only it’s noisy. You know. Reminds you of those printed grids you draw on.
Source Vectorpile
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Colored maple leaves scattered on a surface. This is tileable, so it can be used as a background or wallpaper.
Source Eady
Sort of like the Photoshop transparent background, but better!
Source Alex Parker
From a drawing of the coat of arms of the Ottoman Empire on Wikimedia.
Source Firkin
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
From a drawing in 'Resa i Afrika, genom Angola, Ovampo och Damaraland', P. Moller, 1899.
Source Firkin
Seamless Olive Green Web Background Image
Source V. Hartikainen
Light gray pattern with an almost wall tile-like appearance.
Source Markus Tinner
Remixed from a drawing in 'Line and form', Walter Crane, 1914.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
A comeback for you: the popular Escheresque, now in black.
Source Patten
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin