Lovely pattern with some good-looking non-random noise lines.
Source Zucx
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Black paper texture, based on two different images.
Source Atle Mo
Based from Design Kindle
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
From a drawing in 'Jardyne's Wife', Charles Wills, 1891.
Source Firkin
Submitted by DomainsInfo – wtf, right? But hey, a free pattern.
Source DomainsInfo
Black brick wall pattern. Brick your site up!
Source Alex Parker
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Lovely pattern with splattered vintage speckles.
Source David Pomfret
This one resembles a black concrete wall when is tiled. It should look great, at least with dark website themes.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Heavy depth and shadows here, but might work well on some mobile apps.
Source Damian Rivas
You know you can’t get enough of these linen-fabric-y patterns.
Source James Basoo
It looks very nice I think.
Source V. Hartikainen
The unit cell for this seamless pattern can be had 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
Simple combination of stripy squares with their negatively coloured counterparts
Source Firkin
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Based on an image that was uploaded to Pixabay by devanath
Source Firkin
Colorful Floral Background No Black
Source GDJ