Pixel by pixel, sharp and clean. Very light pattern with clear lines.
Source M.Ashok
A version without colours blended together to give a different look.
Source Firkin
Prismatic Isometric Cube Extra Pattern No Background
Source GDJ
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
CC0 and a seamless pattern from a tile drawn in Paint.net .
Source SliverKnight
Has nothing to do with toast, but it’s nice and subtle.
Source Pippin Lee
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Remixed from a drawing in 'A Girl in Ten Thousand', Elizabeth Meade, 1896.
Source Firkin
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A seamless pattern formed from background pattern 102
Source Firkin
A seamless pattern recreated from an image on Pixabay. It is reminiscent of parquet flooring and is formed from a square tile, which can be recovered in Inkscape by selecting the ungrouped rectangle and using shift-alt-I together.
Source Firkin
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen
Prismatic Abstract Line Art Pattern Background
Source GDJ
White circles connecting on a light gray background.
Source Mark Collins
Pattern Background, Texture, Photoshop Structure style CC0 texture.
Source Darkmoon1968
A bit like some carbon, or knitted netting if you will.
Source Anna Litvinuk
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Continuing the geometric trend, here is one more.
Source Mike Warner
Here's a subtle marble-like background for use on websites.
Source V. Hartikainen
Remixed from a design seen in 'Burghley. The Life of William Cecil', William Charlton, 1857
Source Firkin
A set of paper filters. The base texture is generated the same way, only the compositing mode is varied.
Source Lazur URH
It looks like a polished stone surface to me. Download it for free, as always.
Source V. Hartikainen