Seamless Prismatic Pythagorean Line Art Pattern No Background. A seamless pattern that includes the original tile (go to Objects / Pattern / Pattern To Objects in Inkscape's menu to extract it).
Source GDJ
Derived from an image that was uploaded to Pixabay by Kaz
Source Firkin
Sharp pixel pattern looking like some sort of fabric.
Source Dmitry
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
To get the tile this is based on select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Simple gray checkered lines, in light tones.
Source Radosław Rzepecki
Utilising some flowers from Almeidah. To get the unit tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
A nice one indeed, but I have a feeling we have it already? If you spot a copy, let me know on Twitter.
Source Graphiste
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Heavily remixed from a drawing that was uploaded to Pixabay by ractapopulous
Source Firkin
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
Prismatic Triangular Seamless Pattern III With Background
Source GDJ
White circles connecting on a light gray background.
Source Mark Collins
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
White fabric looking texture with some nice random wave features.
Source Hendrik Lammers
From a drawing in 'Artists and Arabs', Henry Blackburn, 1868
Source Firkin
The classic 45-degree diagonal line pattern, done right.
Source Jorick van Hees
I have no idea what J Boo means by this name, but hey – it’s hot.
Source j Boo
Prismatic Groovy Concentric Background 3
Source GDJ
I know there is one here already, but this is sexy!
Source Gjermund Gustavsen