Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Bigger is better, right? So here you have some large carbon fiber.
Source Factorio.us Collective
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Alternative colour scheme. 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
Derived from a PNG that was uploaded to Pixabay by nutkitten
Source Firkin
Could remind you a bit of those squares in Super Mario Bros, yeh?
Source Jeff Wall
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
Light gray paper pattern with small traces of fiber and some dust.
Source Atle Mo
This one needs to be used in small areas; you can see it repeat.
Source Luca
Zero CC tileable wood texture, made by me procedurally in Neo Texture Edit.
Source Sojan Janso
The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
I asked Gjermund if he could make a pattern for us – result!
Source Gjermund Gustavsen
Made by distorting a simple pattern using the 'sin waves' plugin for Paint.net and vectorising in Vector Magic
Source Firkin
Prismatic Abstract Geometric Background 4
Source GDJ
Subtle scratches on a light gray background.
Source Andrey Ovcharov
A background pattern inspired by designs seen in 'Burghley. The Life of William Cecil', William Charlton, 1857.
Source Firkin
From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Dare I call this a «flat pattern»? Probably not.
Source Dax Kieran
A grid of squares with green colours. Since the colours are randomly distributed it is automatically seamless.
Source Firkin
A re-make of the Gradient Squares pattern.
Source Dimitar Karaytchev
Subtle scratches on a light gray background.
Source Andrey Ovcharov
The tile this is formed from can be retrieved in Inkscape by selecting the rectangle and using shift+alt+i
Source Firkin
Orange-red pattern for tiled backgrounds.
Source V. Hartikainen