From a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Free tiled background with colorful stripes and white splatter.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
This is the third pattern called Dark Denim, but hey, we all love them!
Source Brandon Jacoby
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
I took the liberty of using Dmitry’s pattern and made a version without perforation.
Source Atle Mo
Remixed from a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892. The tile this is based on can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Bumps, highlight and shadows – all good things.
Source Badhon Ebrahim
It almost looks a bit blurry, but then again, so are fishes.
Source Petr Šulc
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
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