An emulated “transparent” background pattern, like that of all kinds of computer graphics software.
Source AdamStanislav
The image is a remix of "edo pattern-samekomon".I changed the color of dots from black to white and added BG in light-brown.
Source Yamachem
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A criss-cross pattern similar to one I saw mown into a sports field.
Source Firkin
A seamless canvas texture for using as background on websites. Colored in pale tones of brown.
Source V. Hartikainen
A free background pattern with abstract green tiles.
Source V. Hartikainen
Here's a bluish gray striped background pattern for use on web sites.
Source V. Hartikainen
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Very simple, very blu(e). Subtle and nice.
Source Seb Jachec
Nice and simple crossed lines in dark gray tones.
Source Stefan Aleksić
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
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
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
CC0 and seamless wellington boot pattern.
Source SliverKnight
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
The image depicts a seamless pattern of Japanese Edo pattern called "kikkou-matsu" or "亀甲松" meaning " tortoiseshell-pinetree".The real pinetree is like this: https://jp.pinterest.com/pin/500744052301065077/
Source Yamachem
A dark metal plate with an embossed grid pattern and a bit of rust. Here's a dark metal plate texture for use as a tiled background on web pages.
Source V. Hartikainen
Actually remixed from a pattern on Pixabay. But then noticed a very similar one on Openclipart.org uploaded by btj51q2.
Source Firkin
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I. Version with black background.
Source Firkin
A free seamless background with pink spots.
Source V. Hartikainen
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning