Background Wall, Art Abstract, Block Well & CC0 texture.
Source Ractapopulous
Sometimes you just need the simplest thing.
Source Fabricio
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A seamless pattern from a tile drawn in Paint.net and vectorised in Vector Magic
Source Firkin
Snap! It’s a pattern, and it’s not grayscale! Of course you can always change the color in Photoshop.
Source Atle Mo
This was formed by distorting an image of a background on Pixabay.
Source Firkin
You could get a bit dizzy from this one, but it might come in handy.
Source Dertig Media
Might not be super subtle, but quite original in its form.
Source Alex Smith
Here's an yet another background for websites, with a seamless texture of wood planks this time.
Source V. Hartikainen
There are many carbon patterns, but this one is tiny.
Source Designova
Seamless pattern the tile for which can be had by using shift-alt-I on the selected rectangle in Inkscape.
Source Firkin
From a drawing in 'Art Embroidery', M.S. Lockwood and E. Glaister, 1878.
Source Firkin
Vector version of a png that was uploaded to Pixabay by pencilparker
Source Firkin
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
Prismatic Hexagonalist Pattern No Background
Source GDJ
This light background pattern has a texture of "frozen" surface with diagonal stripes. Here's an yet another addition to the collection of free website backgrounds.
Source V. Hartikainen
Could be paper, could be a Polaroid frame – up to you!
Source Chaos
Fix and cc0 to get the tile this is based on.
Source SliverKnight
Sounds like something from World of Warcraft. Has to be good.
Source Tony Kinard
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
A free green background pattern with a pattern of rhombuses on a seamless texture. Feel free to use it as a tiled background image on your web site.
Source V. Hartikainen