Same classic 45-degree pattern, dark version.
Source Luke McDonald
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
A free repetitive background with a dark concrete wall like texture. This one may be used in dark web site designs.
Source V. Hartikainen
The basic shapes never get old. Simple triangle pattern.
Source Atle Mo
A free pink background pattern.
Source V. Hartikainen
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
A seamless pattern formed from a tile made from page ornament 22. To get the tile, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Zero CC tileable hard cover cells, skin like, book texture. 4K, Scanned and made by me CC0
Source Sojan Janso
A textured orange background pattern with vertical stripes.
Source V. Hartikainen
Inspired by this, I came up with this pattern. Madness!
Source Atle Mo
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
A smooth mid-tone gray, or low contrast if you will, linen pattern.
Source Jordan Pittman
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
This is a remix of "geometrical pattern 01".
Source Yamachem
From a drawing in 'Less Black than we're painted', James Payn, 1884.
Source Firkin
It’s big, it’s gradient—and it’s square.
Source Brankic1979
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Inspired by a drawing in 'Kulturgeschichte', Freidrich Hellwald, 1896.
Source Firkin
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel