Seamless pattern formed from a tile that can be extracted by selecting the rectangle in Inkscape and using shift-alt-i.
Source Firkin
Super dark, crisp and detailed. And a Kill Bill reference.
Source Badhon Ebrahim
This one is amazing, truly original. Go use it!
Source Viahorizon
From a drawing in 'Hyde Park from Domesday-Book to date', John Ashton, 1896.
Source Firkin
Remixed from a drawing in 'Hungary. A guide book. By several authors', 1890.
Source Firkin
Abstract Tiled Background Extended 8
Source GDJ
Derived from an image that was uploaded to Pixabay by TheDigitalArtist
Source Firkin
The green fibers pattern will work very well in grayscale as well.
Source Matteo Di Capua
This one is super crisp at 2X. Lined paper with some dust and scratches.
Source HQvectors
Prismatic Snowflakes Pattern 2 No Background
Source GDJ
If you want png files of this u can download them here : viscious-speed.deviantart.com/gallery/27635117
Source Viscious-Speed
This seamless light brown background texture resembles a wallpaper with vertical stripes. One way to use it is as a tiled background on web sites.
Source V. Hartikainen
A lovely light gray pattern with stripes and a dash of noise.
Source V. Hartikainen
No idea what Nistri means, but it’s a crisp little pattern nonetheless.
Source Markus Reiter
Derived from an image that was uploaded to Pixabay by Darkmoon1968
Source Firkin
Dark squares with some virus-looking dots in the grid.
Source Hugo Loning
Light gray version of the Binding pattern that looks a bit like fabric.
Source Newbury
A pattern formed from a squared tile. The tile can be accessed in Inkscape by selecting the rectangle and using shift-alt-i.
Source Firkin
A dark gray, sandy pattern with small light dots, and some angled strokes.
Source Atle Mo