A free seamless background texture that looks like a brown stone wall.
Source V. Hartikainen
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
Prismatic Floral Background No Black
Source GDJ
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
Cubes as far as your eyes can see. You know, because they tile.
Source Jan Meeus
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
An abstract texture of water. It's not perfect, but will do. You may download if you like it.
Source V. Hartikainen
A seamless texture of a rough concrete surface.
Source V. Hartikainen
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
A slightly grainy paper pattern with small horizontal and vertical strokes.
Source Atle Mo
People seem to enjoy dark patterns, so here is one with some circles.
Source Atle Mo
This seamless pattern consists of a blue grid on a yellow background.
Source V. Hartikainen
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Small dots with minor circles spread across to form a nice mosaic.
Source John Burks
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin