Light square grid pattern, great for a “DIY projects” sort of website, maybe?
Source Rafael Almeida
Drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
A huge one at 800x600px. Made from a photo I took going home after work.
Source Atle Mo
Embossed lines and squares with subtle highlights.
Source Alex Parker
A simple circle. That’s all it takes. This one is even transparent, for those who like that.
Source Saqib
One more sharp little tile for you. Subtle circles this time.
Source Blunia
A light gray fabric pattern with faded vertical stripes.
Source V. Hartikainen
This was formed by distorting an image of a background on Pixabay.
Source Firkin
This is so subtle I hope you can see it! Tweak at will.
Source Alexandre Naud
On a large canvas you can see it tiling, but used on smaller areas, it’s beautiful.
Source Paul Phönixweiß
Farmer could be some sort of fabric pattern, with a hint of green.
Source Fabian Schultz
Redrawn based on a drawing in 'По Сѣверо-Западу Россіи' Konstantin Sluchevsky, 1897.
Source Firkin
Seamless tile drawn in Paint.net and vectorised in Vector Magic.
Source Firkin
Prismatic Groovy Concentric Background No Black
Source GDJ
Semi-light fabric pattern made out of random pixels in shades of gray.
Source Atle Mo
A seamless stone-like background for blogs or any other type of websites.
Source V. Hartikainen
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
Abstract Tiled Background Extended 6
Source GDJ
One of the few full-color patterns here, but this one was just too good to pass up.
Source Alexey Usoltsev
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Hexagonal dark 3D pattern. What more can you ask for?
Source Norbert Levajsics
Sort of reminds me of those old house wallpapers.
Source Tish