There are quite a few grid patterns, but this one is a super tiny grid with some dust for good measure.
Source Dominik Kiss
A car pattern?! Can it be subtle? I say yes!
Source Radosław Rzepecki
A seamless pattern the unit cell for which can be had by selecting the rectangle in Inkscape and using shift+alt+i.
Source Firkin
Design drawn in Paint.net, vectorised using Vector Magic and finished in Inkscape.
Source Firkin
The tile this fill pattern is based on can be had by using shift+alt+i on the rectangle.
Source Firkin
A background pattern with blue on white vertical stripes.
Source V. Hartikainen
Dark Tile-able Grunge Texture. I think this texture can be classified as grunge. It's free and seamless, as always.
Source V. Hartikainen
Vertical lines with a bumpy, yet crisp, feel to it.
Source Raasa
These dots are already worn for you, so you don’t have to.
Source Matt McDaniel
Colour version of the original pattern.
Source Firkin
Super detailed 16×16 tile that forms a beautiful pattern of straws.
Source Pavel
To get the tile this is based on, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
A mid-tone gray pattern with some cement looking texture.
Source Hendrik Lammers
Floral patterns might not be the hottest thing right now, but you never know when you need it!
Source Lauren
Prismatic Snowflakes Pattern 3 No Background
Source GDJ
I love cream! 50x50px and lovely in all the good ways.
Source Thomas Myrman
Some more diagonal lines and noise, because you know you want it.
Source Atle Mo
Remixed from a drawing in 'The March of Loyalty', Letitia MacClintock, 1884.
Source Firkin
Seamless pattern formed from a tile that can be had by selecting the rectangle in Inkscape and using shift+alt+i
Source Firkin
Nasty or not, it’s a nice pattern that tiles. Like they all do.
Source Badhon Ebrahim
Formed from a tile based on a drawing from 'Viaggi d'un artista nell'America Meridionale', Guido Boggiani, 1895.
Source Firkin
Prismatic 3D Isometric Tessellation Pattern 6
Source GDJ
Prismatic Groovy Concentric Background 4
Source GDJ
Remixed from a PNG that was uploaded to Pixabay by VictorianLady
Source Firkin
A rusty grunge background for websites. Feel free to use it in your site's theme.
Source V. Hartikainen