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
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
ZeroCC tileable wood boards texture, photographed and made by me. CC0
Source Sojan Janso
A bit strange this one, but nice at the same time.
Source Diogo Silva
Prismatic Groovy Concentric Background 3 No Black
Source GDJ
Light honeycomb pattern made up of the classic hexagon shape.
Source Federica Pelzel
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
Prismatic Abstract Background Design
Source GDJ
Remixed from a drawing in 'Maidenhood; or, the Verge of the Stream', Laura Jewry, 1876.
Source Firkin
From a drawing in 'Worsborough; its historical associations and rural attractions', Joseph Wilkinson, 1879.
Source Firkin
This could be a hippy vintage wallpaper.
Source Tileable Patterns
Black brick wall pattern. Brick your site up!
Source Alex Parker
A seamless web background with texture of aged grid paper.
Source V. Hartikainen
Vector version of a JPG that was uploaded to Pixabay by theasad121
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
ZeroCC tileable mossy (lichen) stone texture, edited from pixabay. CC0
Source Sojan Janso
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
To get the tile this is based on, select the rectangle in Inkscape and use shift+alt+i
Source Firkin
A topographic map like this has actually been requested a few times, so here you go!
Source Sam Feyaerts
The name Paisley reminds me of an old British servant. That’s just me.
Source Swetha
Did some testing with Repper Pro tonight, and this gray mid-tone pattern came out.
Source Atle Mo
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Geometric lines are always hot, and this pattern is no exception.
Source Listvetra
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
Pattern produced in Paint.net using the Vibrato plug-in.
Source Firkin