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
A seamless chequerboard pattern formed from a tile that can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
Dead simple but beautiful horizontal line pattern.
Source Fabian Schultz
An alternative colour scheme to the original seamless pattern.
Source Firkin
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Formed from decorative divider 184 in paint.net. Vectorised with Vector Magic.
Source Firkin
Imagine you zoomed in 1000X on some fabric. But then it turned out to be a skeleton!
Source Angelica
Sometimes you just need the simplest thing.
Source Fabricio
Prismatic Chevrons Pattern 5 With Background
Source GDJ
As simple and subtle as it gets. But sometimes that’s just what you want.
Source Designova
This makes me wanna shoot some pool! Sweet green pool table pattern.
Source Caveman
Dark blue concrete wall with some small dust spots.
Source Atle Mo
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A simple example on using clones. You can generate a nice base for a pattern fill quickly with it.
Source Lazur URH
Actually, there's no clouds in it, but I think it looks quite nice.
Source V. Hartikainen
This is the remix of "polka dot seamless pattern".The image depicts polka dot seamless pattern.
Source Yamachem
Remixed from a drawing in 'Analecta Eboracensia', Thomas Widdrington, 1897.
Source Firkin
The unit cell for this seamless pattern can be had in Inkscape by selecting the rectangle and using shift+alt+i.
Source Firkin
Prismatic Chevrons Pattern 5 With Background
Source GDJ
The image is a seamless pattern which is derived from a vine .Consequently, the vine got like dots via vectorization.The original vine is here:jp.pinterest.com/pin/500744052301410188/
Source Yamachem
The name tells you it has curves. Oh yes, it does!
Source Peter Chon
Not a flat you live inside, like in the UK – but a flat piece of cardboard.
Source Appleshadow
Drawn in Paint.net using the kaleidoscope plug-in and vectorised.
Source Firkin
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo