After 1 comes 2, same but different. You get the idea.
Source Hendrik Lammers
This was formed by distorting an image of a background on Pixabay.
Source Firkin
Might not be super subtle, but quite original in its form.
Source Alex Smith
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
Dark pattern with some nice diagonal stitched lines crossing over.
Source Ashton
Here's a seamless brown cork board background texture. Feel free to download or reshare if you like.
Source V. Hartikainen
I love these crisp, tiny, super subtle patterns.
Source Badhon Ebrahim
Inspired by a design found in 'Konstantinápolyi emlékeim', Miklos Chriszto, 1893.
Source Firkin
This light blue background pattern is quite pleasing to the eye, it consists of a tiny rough grid pattern, which is seamless by design. That's it, if you like the color, you can use this seamless pattern in a web design without making any further modifications to it.
Source V. Hartikainen
Seamless , tileable CC-0 texture. Created by my own, feel free to use wherever you want!
Source Linolafett
Abstract Ellipses Background Grayscale
Source GDJ
Tiny little flowers growing on your screen. Nice, huh?
Source Themes Tube
Love me some light mesh on a Monday. Sharp.
Source Wilmotte Bastien
Sort of like the back of a wooden board. Light, subtle, and stylish, just the way we like it!
Source Nikolalek
Derived from a drawing in 'The Murmur of the Shells', Samuel Cowen, 1879.
Source Firkin
The image is the remix of "wire-mesh fence seamless pattern" .This is a more minute version of it.Sorry for the file size.Using path>difference in Inkscape, I will cut out any silhouette from this pattern and create a "meshed silhouette".
Source Yamachem
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
Derived from an image that was uploaded to Pixabay by pugmom40
Source Firkin
This one is amazing, truly original. Go use it!
Source Viahorizon
White little knobs, coming in at 10x10px. Sweet!
Source Amos
Fake or not, it’s quite luxurious.
Source Factorio.us Collective
A seamless pattern formed from a square tile based on a jpg on Pixabay. The tile can be retrieved by selecting the rectangle in Inkscape and using shift-alt-I.
Source Firkin
A pattern derived from repeating unit cells each derived from part of a fractal rendering in paint.net.
Source Firkin
From a drawing in 'Sun Pictures of the Norfolk Broads', Ernest Suffling, 1892.
Source Firkin