This tiled background comes in red and consists of tiles that look like gemstones. It is more for blogs or social profiles, I think.
Source V. Hartikainen
Prismatic Geometric Pattern Background No Black
Source GDJ
Inspired by a pattern seen on a public domain image of a very old tile. To get the unit cell, select the rectangle in Inkscape and use shift+alt+i.
Source Firkin
Plywood Web Background background image for use in web design.
Source V. Hartikainen
Sharp diamond pattern. A small 24x18px tile.
Source Tom Neal
More Japanese-inspired patterns, Gold Scales this time.
Source Josh Green
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.
Source V. Hartikainen
This one could be the shirt of a golf player. Angled lines in different thicknesses.
Source Olivier Pineda
Prismatic Geometric Tessellation Pattern 4 No Background
Source GDJ
From a drawing in 'Studies for Stories', Jean Ingelow, 1864.
Source Firkin
Seamless pattern formed from a square tile that can be retrieved in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
More carbon fiber for your collections. This time in white or semi-dark gray.
Source Badhon Ebrahim
A seamless pattern with wide vertical stripes colored in pale yellow.
Source V. Hartikainen
Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
This is lovely, just the right amount of subtle noise, lines and textures.
Source Richard Tabor
Smooth Polaroid pattern with a light blue tint.
Source Daniel Beaton
Used the 6th circle pattern designed by Viscious-Speed to create a print that can be used for card making or scrapbooking. Save as a PDF file for the best printing option.
Source Lovinglf
A seamless pattern the starting point for which was a 'rainbow twist' texture in Paint.net.
Source Firkin
More in the paper realm, this time with fibers.
Source Jorge Fuentes
And some more testing, this time with Seamless Studio. It’s Robots FFS!
Source Seamless Studio
Sort of like the Photoshop transparent background, but better!
Source Alex Parker