Black brick wall pattern. Brick your site up!
Source Alex Parker
Prismatic Abstract Geometric Background derived from an image on Pixabay.
Source GDJ
A good starting point for a cardboard pattern. This would work well in a variety of colors.
Source Atle Mo
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Zero CC tileable dry grass texture, photographed and made by me. CC0
Source Sojan Janso
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
The square tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
The image depicts a seamless pattern which includes hexagonally-aligned gourds with BG in light-brown.
Source Yamachem
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
8 by 8 pixels, and just what the title says.
Source pixilated
A free seamless background with pink spots.
Source V. Hartikainen
Traced from a drawing in 'Household Stories from the Collection of the Brothers Grimm', Wilhelm Carl Grimm , 1882.
Source Firkin
A free grid paper background pattern for using on web sites.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Prismatic Abstract Geometric Background 5
Source GDJ
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Embossed lines and squares with subtle highlights.
Source Alex Parker
A seamless web background with texture of aged grid paper.
Source V. Hartikainen