Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
This metal background pattern resembles a metal plate with rivets. Solid rivets on a metal plate.
Source V. Hartikainen
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
Paper model of a tetrahedron. Modelo de papel de um tetraedro.
Source laobc
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
First pattern tailor-made for Retina, with many more to come. All the old ones are upscaled, in case you want to re-download.
Source Atle Mo
Prismatic Groovy Concentric Background No Black
Source GDJ
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
A dark one with geometric shapes and dotted lines.
Source Mohawk Studios
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
One more sharp little tile for you. Subtle circles this time.
Source Blunia
A seamless pattern the starting point for which was a 'light rays' rendering in Paint.net.
Source Firkin
I guess this is inspired by the city of Ravenna in Italy and its stone walls.
Source Sentel
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 light gray background pattern with seamless fabric-like texture and almost unnoticeable stripes.
Source V. Hartikainen
Prismatic Curved Diamond Pattern No Background
Source GDJ
Background formed from the iconic plastic construction bricks that gave me endless hours of fun when I was a lad.
Source Firkin