Very dark pattern with some noise and 45-degree lines.
Source Stefan Aleksić
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Some rectangles, a bit of dust and grunge, plus a hint of concrete.
Source Atle Mo
The tile this is based on can be retrieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
This background texture resembles stone. It may be used as a background on web pages or on some of their html elements (header, borders, menu bar, etc.). Just modify it for your needs.
Source V. Hartikainen
You can never get enough of these tiny pixel patterns with sharp lines.
Source Designova
From an image on opengameart.org shared by rubberduck.
Source Firkin
It has waves, so make sure you don’t get sea sickness.
Source CoolPatterns
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
A seamless pattern from a tile made from a jpg on Pixabay. To get the tile select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
Formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Derived from an image that was uploaded to Pixabay by starchim01
Source Firkin
So tiny, just 7 by 7 pixels – but still so sexy. Ah yes.
Source Dmitriy Prodchenko
Sweet and subtle white plaster with hints of noise and grunge.
Source Phil Maurer
A very dark spotted twinkle pattern for your twinkle needs.
Source Badhon Ebrahim
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
Formed by distorting a JPG from PublicDomainPictures
Source Firkin
Classic 45-degree pattern, light version.
Source Luke McDonald
To get the tile this is based on select the rectangle in Inkscape and use shift-alt-i
Source Firkin
Prismatic Abstract Geometric Background 5 No Black
Source GDJ
Don’t look at this one too long if you’re high on something.
Source Luuk van Baars
From a drawing in 'Cassell's Library of English Literature', Henry Morley, 1883.
Source Firkin
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Fabric-ish patterns are close to my heart. French Stucco to the rescue.
Source Christopher Buecheler
A seamless pattern based on a tile that can be achieved by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Here's an yet another seamless note paper texture for use as a background on websites.
Source V. Hartikainen