Seamless pattern the basic tile for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
A seamless texture of worn out "cardboard".
Source V. Hartikainen
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
Classy golf-pants pattern, or crossed stripes if you will.
Source Will Monson
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
The file was named striped lens, but hey – Translucent Fibres works too.
Source Angelica
Prismatic Snowflakes Pattern No Background
Source GDJ
A large pattern with funky shapes and form. An original. Sort of origami-ish.
Source Luuk van Baars
Brushed aluminum, in a bright gray version. Lovely 2X as well.
Source Andre Schouten
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Detailed but still subtle and quite original. Lovely gray shades.
Source Kim Ruddock
Dark wooden pattern, given the subtle treatment. based on texture from Cloaks.
High detail stone wall with minor cracks and specks.
Source Projecteightyfive
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
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
Remixed from an image that was uploaded to Pixabay by KirstenStar
Source Firkin
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
This is a seamless pattern which is derived from a flower petal image.
Source Yamachem