Medium gray fabric pattern with 45-degree lines going across.
Source Atle Mo
Remixed from a design seen on Pixabay. The basic tile can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
A free seamless background image with a texture of dark red "canvas". It should look very nice on web sites.
Source V. Hartikainen
Colorful Floral Background No Black
Source GDJ
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Dark and hard, just the way we like it. Embossed triangles makes a nice pattern.
Source Ivan Ginev
Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Bright gray tones with a hint of some metal surface.
Source Hendrik Lammers
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
A fun-looking elastoplast/band-aid pattern. A hint of orange tone in this one.
Source Josh Green
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
Scanned some rice paper and tiled it up for you. Enjoy.
Source Atle Mo
A dark striped seamless pattern suitable for use as a background on websites.
Source V. Hartikainen
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
This was formed by distorting an image of a background on Pixabay.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
Sharp but soft triangles in light shades of gray.
Source Pixeden
From a drawing in 'Navigations de Alouys de Cademoste.-La Navigation du Capitaine Pierre Sintre', Alvise da ca da Mosto, 1895.
Source Firkin
Here's a bluish gray striped background pattern for use on web sites.
Source V. Hartikainen