This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Medium gray pattern with small strokes to give a weave effect.
Source Catherine
Prismatic Abstract Background Design
Source GDJ
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A dark metallic background with a pattern of stamped dots. Here's a dark "metallic" background pattern for you.
Source V. Hartikainen
A seamless green background texture. The image is distributed under a Creative Commons License (like all of the images here).
Source V. Hartikainen
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
A gray background pattern with a texture of textile. Suits perfectly for web design.
Source V. Hartikainen
You just can’t get enough of the fabric patterns, so here is one more for your collection.
Source Krisp Designs
Prismatic Abstract Geometric Background 4 No Black
Source GDJ
Not a pattern for fabrics, but one produced from a jpg of a stack of fabric items that was posted on Pixabay. The tile that this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Number 3 in a series of 5 beautiful patterns. Can be found in colors on the submitter’s website.
Source Janos Koos
A large (588x375px) sand-colored pattern for your ever-growing collection. Shrink at will.
Source Alex Tapein
Turn your site into a dragon with this great scale pattern.
Source Alex Parker
Zero CC tileable bark texture, photographed and made by me. CC0
Source Sojan Janso
This one is so simple, yet so good. And you know it. Has to be in the collection.
Source Gluszczenko
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
I’m starting to think I have a concrete wall fetish.
Source Atle Mo
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
The image depicts a seamless pattern of pine tree leaves.
Source Yamachem
A seamless pattern formed from a square tile. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin