From a drawing in 'Line and form', Walter Crane, 1914.
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
This is a semi-dark pattern, sort of linen-y.
Source Sagive SEO
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Prismatic Snowflakes Pattern No Background
Source GDJ
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
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
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
Prismatic Abstract Background Design
Source GDJ
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
A pattern drawn in Paint.net and vectorized in Vector Magic.
Source Firkin
A seamless pattern made from the gold Penrose triangle by GDJ and the two remixes
Source Firkin
Some dark 45 degree angles creating a nice pattern. Huge.
Source Dark Sharp Edges
Thin lines, noise and texture creates this crisp dark denim pattern.
Source Marco Slooten
The tile can be had by using shift+alt+i on the selected rectangle in Inkscape
Source Firkin
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
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
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
This one is rather fun and playful. The 2X could be used at 1X too!
Source Welsley
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