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
Here's a new paper-like background for free use on personal and commercial projects (this applies to all background patterns here).
Source V. Hartikainen
This is the remix of an OCAL clipart called "Rain on Window" uploaded by "pagarmidna".Thanks.This is a seamless pattern of raindrops.
Source Yamachem
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
Prismatic Rounded Squares Grid 3 No Background
Source GDJ
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
Everyone loves a diamond, right? Make your site sparkle.
Source AJ Troxell
Use shift+alt+i on the selected rectangle in Inkscape to get the tile this is based on
Source Firkin
Feel free to use this seamless background texture as a background on a web site. It's colored in a light pink color and is seamlessly tile-able.
Source V. Hartikainen
Colour version that is close to the original drawing uploaded to Pixabay by pencilparker.
Source Firkin
If you like it a bit trippy, this wave pattern might be for you.
Source Ian Soper
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
That’s what it is, a dark dot. Or sort of carbon looking.
Source Tsvetelin Nikolov
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
A beautiful dark wood pattern, superbly tiled.
Source Omar Alvarado
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Remixed from a drawing in 'Canadian forest industries July-December', 1915
Source Firkin
Carbon fiber is never out of fashion, so here is one more style for you.
Source Alfred Lee
From a drawing in 'Heroes of North African Discovery', Nancy Meugens, 1894.
Source Firkin
Derived from an image that was uploaded to Pixabay by mdmelo.
Source Firkin